National Library of Energy BETA

Sample records for drive irrigation systems

  1. 'Smart' Irrigation Systems

    SciTech Connect (OSTI)

    Hastbacka, Mildred; Dieckmann, John; Brodrick, James

    2012-08-31

    The article discusses the ASHRAE Standard 189, with mandatory and optional provisions related to water use efficiency, then focuses on the use of water efficient irrigation systems and the use of recycled water such as air conditioner condensate for landscaping irrigation. Benefits of such practices include both water and energy savings.

  2. Traction Drive Systems Breakout

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Traction Drive Systems Breakout John M. Miller, PhD, PE, F.IEEE, F.SAE Oak Ridge National Laboratory Facilitator July 24, 2012 EV Everywhere Grand Challenge Vehicle Technologies ...

  3. Electric Drive Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Drive Systems - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy

  4. Traction Drive Systems Breakout

    Broader source: Energy.gov [DOE]

    Presentation given at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL.

  5. Next Generation Environmentally Friendly Driving Feedback Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Environmentally Friendly Driving Feedback Systems Research and Development Next Generation Environmentally Friendly Driving Feedback Systems Research and Development 2012 DOE ...

  6. Traction Drive Systems Breakout Group

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    TRACTION DRIVE SYSTEM BREAKOUT GROUP EV Everywhere Workshop July 24, 2012 Breakout Session #1 - Discussion of Performance Targets and Barriers Comments on the Achievability of the Targets * 1 - What is the material cost floor to meet the $4/kW (AER300) & $15/kW (AER100)? * 2 - Consolidation of power module technologies will help meet cost targets * 3 - Don't overlook profit motive in value chain * 4 - Today's HEV systems drive EV traction drive systems because of manufacturing base Barriers

  7. Energy savings potential from energy-conserving irrigation systems

    SciTech Connect (OSTI)

    Wilfert, G.L.; Patton, W.P.; Harrer, B.J.; Clark, M.A.

    1982-11-01

    This report systematically compares, within a consistent framework, the technical and economic characteristics of energy-conserving irrigation systems with those of conventional irrigation systems and to determine total energy savings. Levelized annual costs of owning and operating both energy-conserving and conventional irrigation systems have been developed and compared for all 17 states to account for the differences in energy costs and irrigation conditions in each state. Market penetration of energy-conserving systems is assessed for those systems having lower levelized annual costs than conventional systems performing the same function. Annual energy savings were computed by matching the energy savings per system with an assumed maximum market penetration of 100 percent in those markets where the levelized annual costs of energy-conserving systems are lower than the levelized annual costs of conventional systems.

  8. Control rod drive hydraulic system

    DOE Patents [OSTI]

    Ose, Richard A.

    1992-01-01

    A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

  9. Centerless-drive solar collector system

    SciTech Connect (OSTI)

    Butler, B. L.

    1985-12-24

    A parabolic-trough solar collector system is disclosed, with each collector driven to track the sun using a ring driven in centerless fashion. The parabolic troughs are made of laminated plywood or molded or formed of plastics or metals. The drive motor moves a flexible belt, i.e., chain or cable, which is routed about the drive ring on each collector. The motion of the cable moves all drive rings together to track the sun. A photodetector senses the position of the sun and provides the signal needed to drive the collectors in the correct direction.

  10. Tritium Irrigation Facility & Automated Vadose Zone Monitoring System |

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Savannah River Ecology Laboratory Tritium Irrigation Facility and Automated Vadose Monitoring System The opportunity to study tritium movement in a natural system presents a rare opportunity for both physical and biological research. Researchers may take advantage of tritium's properties as a conservative tracer for modeling contaminant transport, as a radioactive tracer for examining biological processes involving water, or as an example of radionuclide contaminant behavior in natural

  11. Improving Motor and Drive System Performance - A Sourcebook for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Motor and Drive System Performance - A Sourcebook for Industry Improving Motor and Drive System Performance - A Sourcebook for Industry This sourcebook outlines opportunities to ...

  12. HybriDrive Propulsion System

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DOEFTA Fuel Cell Research Priorities Workshop Washington, DC 7 June 2010 Bart W. Mancini Sr. Principal Systems Engineer ... (retired) * Ballard 120 kW PEM FC on-board Methanol ...

  13. Improving Motor and Drive System Performance - A Sourcebook for Industry

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    | Department of Energy Motor and Drive System Performance - A Sourcebook for Industry Improving Motor and Drive System Performance - A Sourcebook for Industry This sourcebook outlines opportunities to improve motor and drive systems performance. The sourcebook is divided into four main sections: Motor and Drive System Basics: Summarizes important terms, relationships, and system design considerations relating to motor and drive systems. Performance Opportunity Road Map: Details the key

  14. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, James M.; Sereshteh, Ahmad

    1988-01-01

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify thetorque commands applied to the motor.

  15. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, J.M.; Sereshteh, A.

    1988-08-30

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify the torque commands applied to the motor. 5 figs.

  16. Heating and current drive systems for TPX

    SciTech Connect (OSTI)

    Swain, D.; Goranson, P.; Halle, A. von; Bernabei, S.; Greenough, N.

    1994-05-24

    The heating and current drive (H and CD) system proposed for the TPX tokamak will consist of ion cyclotron, neutral beam, and lower hybrid systems. It will have 17.5 MW of installed H and CD power initially, and can be upgraded to 45 MW. It will be used to explore advanced confinement and fully current-driven plasma regimes with pulse lengths of up to 1,000 s.

  17. Improving Motor and Drive System Performance

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SOURCEBOOK FOR INDUSTRY ADVANCED MANUFACTURING OFFICE Improving Motor and Drive System Performance DISCLAIMER This publication was prepared by the Washington State University Energy Program and the National Renewable Energy Laboratory for the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy. Neither the United States, DOE, the Copper Development Association, the Washington State University Energy Program, National Electrical Manufacturers Association, nor any of their

  18. US DRIVE Vehicle Systems and Analysis Technical Team Roadmap | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy Vehicle Systems and Analysis Technical Team Roadmap US DRIVE Vehicle Systems and Analysis Technical Team Roadmap VSATT provides the analytic support and subsystem characterizations that guide technology and system selections and assist U.S. DRIVE Technical Teams in determining performance goals and validation metrics. vsatt_roadmap_june2013.pdf (663.74 KB) More Documents & Publications US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability

  19. Vehicle Technologies Office: Electric Drive Systems Research and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Development | Department of Energy Plug-in Electric Vehicles & Batteries » Vehicle Technologies Office: Electric Drive Systems Research and Development Vehicle Technologies Office: Electric Drive Systems Research and Development Vehicle Technologies Office: Electric Drive Systems Research and Development Electric drive technologies, including the electric motor, inverter, boost converter, and on-board charger, are essential components of hybrid and plug-in electric vehicles (PEV)

  20. Real-time data acquisition and telemetry based irrigation control system

    DOE Patents [OSTI]

    Slater, John M.; Svoboda, John M.

    2005-12-13

    A data acquisition and telemetry based control system for use in facilitating substantially real time management of an agricultural irrigation system. The soil moisture sensor includes a reader and a plurality of probes. The probes each include an electronic circuit having a moisture sensing capacitor in operative communication with the soil whose moisture is to be measured. Each probe also includes a receive/transmit antenna and the reader includes a transmit/receive antenna, so that as the reader passes near the probe, the reader transmits a digital excitation signal to the electronic circuit of the biodegradable probe via an inductive couple formed between the transmit/receive antenna of the reader and the receive/transmit coil of the probe. The electronic circuit uses an energy component of the excitation signal to generate a digital data signal which indicates the moisture content of the soil adjacent to the moisture sensing capacitor. The probe sends the data signal to the reader which then uses the data signal to develop a corresponding set of watering instructions which are then transmitted to a control module in communication with the irrigation system. The control module sends corresponding control signals to nozzles of the irrigation system causing the irrigation system to disperse water in a manner consistent with the moisture content data transmitted by the probes to the reader. Because the irrigation system moves continuously through the field to be irrigated, the moisture content data acquisition and resultant water dispersal by the irrigation system occur substantially in real time.

  1. Crops reap benefits of Pantex irrigation system | National Nuclear...

    National Nuclear Security Administration (NNSA)

    in bushel per acre for wheat, and last growing season, a Carson County record in density per bushel for corn. The 100-acre tract to be added to the underground irrigation...

  2. Improving Motor and Drive System Performance - A Sourcebook for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The sourcebook is divided into four main sections: Motor and Drive System Basics: Summarizes important terms, relationships, and system design considerations relating to motor and ...

  3. US DRIVE Vehicle Systems and Analysis Technical Team Roadmap...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Vehicle Systems and Analysis Technical Team Roadmap US DRIVE Vehicle Systems and Analysis Technical Team Roadmap VSATT provides the analytic support and subsystem characterizations ...

  4. Wind turbine ring/shroud drive system

    DOE Patents [OSTI]

    Blakemore, Ralph W.

    2005-10-04

    A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric generator. In one embodiment, the electric generator may be cantilevered from the nacelle such that the gear on the generator drive shaft is contacted by the ring gear of the shroud. The shroud also provides protection for the gearing and aids in preventing gear lubricant contamination.

  5. Electric Drive Component Manufacturing: Magna E-Car Systems of...

    Broader source: Energy.gov (indexed) [DOE]

    1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit ... Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. Electric ...

  6. Electric Drive Component Manufacturing: Magna E-Car Systems of...

    Broader source: Energy.gov (indexed) [DOE]

    2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review ... Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. Electric ...

  7. EV Everywhere Workshop: Traction Drive Systems Breakout Group...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (1.58 MB) More Documents & Publications EV Everywhere - Charge to Breakout Sessions EV Everywhere Framing Workshop - Report Out & Lessons Learned Traction Drive Systems Breakout

  8. Utilizing the Traction Drive Power Electronics System to Provide...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs Utilizing ... More Documents & Publications Current Source Inverters for HEVs and FCVs Converter ...

  9. Columbia River System Operation Review : Final Environmental Impact Statement, Appendix F: Irrigation, Municipal and Industrial/Water Supply.

    SciTech Connect (OSTI)

    Columbia River System Operations Review; United States. Bonneville Power Administration; United States. Army. Corps of Engineers. North Pacific Division; United States. Bureau of Reclamation. Pacific Northwest Region.

    1995-11-01

    Since the 1930`s, the Columbia River has been harnessed for the benefit of the Northwest and the nation. Federal agencies have built 30 major dams on the river and its tributaries. Dozens of non-Federal projects have been developed as well. The dams provide flood control, irrigation, navigation, hydro-electric power generation, recreation, fish and wildlife, and streamflows for wildlife, anadromous fish, resident fish, and water quality. This is Appendix F of the Environmental Impact Statement for the Columbia River System, focusing on irrigation issues and concerns arrising from the Irrigation and Mitigation of impacts (M&I) working Group of the SOR process. Major subheadings include the following: Scope and process of irrigation/M&I studies; Irrigation/M&I in the Columbia Basin Today including overview, irrigated acreage and water rights, Irrigation and M&I issues basin-wide and at specific locations; and the analysis of impacts and alternative for the Environmental Impact Statement.

  10. Combined Electric Machine and Current Source Inverter Drive System - Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Innovation Portal Hydrogen and Fuel Cell Hydrogen and Fuel Cell Energy Analysis Energy Analysis Advanced Materials Advanced Materials Find More Like This Return to Search Combined Electric Machine and Current Source Inverter Drive System Oak Ridge National Laboratory Contact ORNL About This Technology Publications: PDF Document Publication 11-G00249_ID2505.pdf (764 KB) Technology Marketing SummaryThis technology is a drive system that includes a permanent magnet-less (PM-L) electric motor

  11. Analysis of national pay-as-you-drive insurance systems and other variable driving charges

    SciTech Connect (OSTI)

    Wenzel, T.

    1995-07-01

    Under Pay as You Drive insurance (PAYD), drivers would pay part of their automobile insurance premium as a per-gallon surcharge every time they filled their gas tank. By transfering a portion of the cost of owning a vehicle from a fixed cost to a variable cost, PAYD would discourage driving. PAYD has been proposed recently in California as a means of reforming how auto insurance is provided. PAYD proponents claim that, by forcing drivers to purchase at least part of their insurance every time they refuel their car, PAYD would reduce or eliminate the need for uninsured motorist coverage. Some versions of PAYD proposed in California have been combined with a no-fault insurance system, with the intention of further reducing premiums for the average driver. Other states have proposed PAYD systems that would base insurance premiums on annual miles driven. In this report we discuss some of the qualitative issues surrounding adoption of PAYD and other policies that would convert other fixed costs of driving (vehicle registration, safety/emission control system inspection, and driver license renewal) to variable costs. We examine the effects of these policies on two sets of objectives: objectives related to auto insurance reform, and those related to reducing fuel consumption, CO{sub 2} emissions, and vehicle miles traveled. We pay particular attention to the first objective, insurance reform, since this has generated the most interest in PAYD to date, at least at the state level.

  12. Electric machine and current source inverter drive system

    DOE Patents [OSTI]

    Hsu, John S

    2014-06-24

    A drive system includes an electric machine and a current source inverter (CSI). This integration of an electric machine and an inverter uses the machine's field excitation coil for not only flux generation in the machine but also for the CSI inductor. This integration of the two technologies, namely the U machine motor and the CSI, opens a new chapter for the component function integration instead of the traditional integration by simply placing separate machine and inverter components in the same housing. Elimination of the CSI inductor adds to the CSI volumetric reduction of the capacitors and the elimination of PMs for the motor further improve the drive system cost, weight, and volume.

  13. Case Study: Driving Operational Changes Through an Energy Monitoring System

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    reporting, checklists, energy targets, and feedback leads to effective organizational change. Driving Operational Changes Through an Energy Monitoring System In 2006, IBM launched a corporate effciency program focused on basic operation im- provements in its diverse and far-fung real estate operations. The effciency program had behavior change as a major focus. Examples of changes include the following: * IBM implemented a monthly energy reporting system for its various facilities where

  14. Linear hydraulic drive system for a Stirling engine

    DOE Patents [OSTI]

    Walsh, Michael M.

    1984-02-21

    A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible.

  15. FTIR spectrometer with solid-state drive system

    DOE Patents [OSTI]

    Rajic, Slobodan; Seals, Roland D.; Egert, Charles M.

    1999-01-01

    An FTIR spectrometer (10) and method using a solid-state drive system with thermally responsive members (27) that are subject to expansion upon heating and to contraction upon cooling. Such members (27) are assembled in the device (10) so as to move an angled, reflective surface (22) a small distance. The sample light beam (13) is received at a detector (24) along with a reference light beam (13) and there it is combined into a resulting signal. This allows the "interference" between the two beams to occur for spectral analysis by a processor (29).

  16. Linear hydraulic drive system for a Stirling engine

    SciTech Connect (OSTI)

    Walsh, M.M.

    1984-02-21

    A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible. 2 figs.

  17. Improving Motor and Drive System Performance – A Sourcebook for Industry

    SciTech Connect (OSTI)

    2014-02-01

    This sourcebook outlines opportunities to improve motor and drive systems performance. The sourcebook is divided into four main sections: (1) Motor and Drive System Basics: Summarizes important terms, relationships, and system design considerations relating to motor and drive systems. (2) Performance Opportunity Road Map: Details the key components of well-functioning motor and drive systems and opportunities for energy performance opportunities. (3) Motor System Economics: Offers recommendations on how to propose improvement projects based on corporate priorities, efficiency gains, and financial payback periods. (4) Where to Find Help: Provides a directory of organizations associated with motors and drives, as well as resources for additional information, tools, software, videos, and training opportunities.

  18. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, James W.

    1988-01-01

    Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.

  19. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, J.W.K.

    1987-10-14

    Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.

  20. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, James W.

    1988-08-02

    Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.

  1. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, Robert H; Ayers, Curtis William; Chiasson, J. N.; Burress, Timothy A; Marlino, Laura D

    2006-05-01

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE) - Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if

  2. Increasing water holding capacity for irrigation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Increasing water holding capacity for irrigation Researchers recommend solutions for sediment trapping in irrigation system LANL and SNL leveraged technical expertise to determine the sources of sediment and recommend solutions for irrigation sediment buildup management. April 3, 2012 Santa Cruz Irrigation District (SCID) Kenny Salazar, owner of Kenny Salazar Orchards, stands beside the Santa Cruz Reservoir Dam, which holds back the waters of the Santa Cruz Irrigation District. Salazar, a board

  3. EV Everywhere Workshop: Traction Drive Systems Breakout Group Report

    Broader source: Energy.gov [DOE]

    Presentation given at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL.

  4. iDriving (Intelligent Driving)

    Energy Science and Technology Software Center (OSTI)

    2012-09-17

    iDriving identifies the driving style factors that have a major impact on fuel economy. An optimization framework is used with the aim of optimizing a driving style with respect to these driving factors. A set of polynomial metamodels is constructed to reflect the responses produced in fuel economy by changing the driving factors. The optimization framework is used to develop a real-time feedback system, including visual instructions, to enable drivers to alter their driving stylesmore » in responses to actual driving conditions to improve fuel efficiency.« less

  5. Comparison of a synergetic battery pack drive system to a pulse width modulated AC induction motor drive for an electric vehicle

    SciTech Connect (OSTI)

    Davis, A.; Salameh, Z.M.; Eaves, S.S.

    1999-06-01

    A new battery configuration technique and accompanying control circuitry, termed a Synergetic Battery Pack (SBP), is designed to work with Lithium batteries, and can be used as both an inverter for an electric vehicle AC induction motor drive and as a battery charger. In this paper, the performance of a Synergetic Battery Pack during motor drive operation is compared via computer simulation with a conventional motor drive which uses sinusoidal pulse width modulation (SPWM) to determine its effectiveness as a motor drive. The study showed that the drive efficiency was compatible with the conventional system, and offered a significant advantage in the lower frequency operating ranges. The voltage total harmonic distortion (THD) of the SBP was significantly lower than the PWM drive output, but the current THD was slightly higher due to the shape of the harmonic spectrum. In conclusion, the SBP is an effective alternative to a conventional drive, but the real advantage lies in its battery management capabilities and charger operation.

  6. Hybrid Braking System for Non-Drive Axles | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hybrid Braking System for Non-Drive Axles Hybrid Braking System for Non-Drive Axles A hybrid braking system is designed to conserve diesel fuel (or alternative fuels) by using regenerative braking, which extends hybrid technology to non-drive axles. p-17_rini.pdf (124.05 KB) More Documents & Publications SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer AVTA: Full-Size Electric Vehicle Specifications and Test Procedures SuperTruck … Development

  7. EV Everywhere: Electric Drive Systems Bring Power to Plug-in...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the first time a domestic automaker is building electric motors for an electric vehicle ... electric drive system in a plug-in electric vehicle bridges two different types of energy. ...

  8. 13th International Conference on Magnetically Levitated Systems and Linear Drives

    SciTech Connect (OSTI)

    Not Available

    1993-09-01

    This report contains short papers on research being conducted throughout the world on magnetically levitated systems, mainly consisting of trains, and magnetic linear drives. These papers have been index separately elsewhere on the data base.

  9. Rim-drive cable-aligned heliostat collector system

    DOE Patents [OSTI]

    Dolan, J.E.; Sands, T.D.

    1982-09-30

    Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the heliostat and provides a means for allowing the heliostat to be substantially protected from weathering. A first drive means is operatively connected to the heliostat to effect steering thereof in at least one of first and second predetermined directions. Finally, a frame member is adapted for supporting the heliostat at an inner portion thereof. The frame includes a plurality of outer expandable portions. Each one of the expandable portions is adapted to slidably engage a corresponding one of the plurality of linkage means. The expandable portions are further adapted to allow the heliostat to be slidably moved along the linkage means in directions away from and towards the enclosure structure and to substantially reduce stress acting on the heliostat during steering.

  10. Rim-drive cable-aligned heliostat collector system

    DOE Patents [OSTI]

    Dolan, James E.; Sands, Timothy D.

    1984-01-01

    Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the heliostat and provides a means for allowing the heliostat to be substantially protected from weathering. A first drive means is operatively connected to the heliostat to effect steering thereof in at least one of first and second predetermined directions. Finally, a frame member is adapted for supporting the heliostat at an inner portion thereof. The frame includes a plurality of outer expandable portions. Each one of the expandable portions is adapted to slidably engage a corresponding one of the plurality of linkage means. The expandable portions are further adapted to allow the heliostat to be slidably moved along the linkage means in directions away from and towards the enclosure structure and to substantially reduce stress acting on the heliostat during steering.

  11. Intergral Drive Systems AG IDS | Open Energy Information

    Open Energy Info (EERE)

    Swaziland Zip: CH-8005 Sector: Wind energy Product: Zurich based producer of power electronics systems for wind turbines, PV plants, and propulsion systems. Coordinates:...

  12. Solar receiver heliostat reflector having a linear drive and position information system

    DOE Patents [OSTI]

    Horton, Richard H.

    1980-01-01

    A heliostat for a solar receiver system comprises an improved drive and control system for the heliostat reflector assembly. The heliostat reflector assembly is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e., heat receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The improved drive system includes linear stepping motors which comprise low weight, low cost, electronic pulse driven components. One embodiment comprises linear stepping motors controlled by a programmed, electronic microprocessor. Another embodiment comprises a tape driven system controlled by a position control magnetic tape.

  13. Performance Comparison Study of SiC and Si Technology for an IPM Drive System

    SciTech Connect (OSTI)

    Chinthavali, Madhu Sudhan; Otaduy, Pedro J; Ozpineci, Burak

    2010-01-01

    The impact of the new SiC material based devices on a full system needs to be evaluated in order to assess the benefits of replacing Silicon (Si) devices with WBG devices. In this paper the results obtained with a full-system model simulated for an aggressive US06 drive cycle are presented. The system model includes a motor/generator model and inverter loss model developed using actual measured data. The results provide an insight to the difference in performance of a permanent magnet traction drive system using SiC versus Si devices.

  14. Improving Motor and Drive System Performance: A Sourcebook for Industry

    SciTech Connect (OSTI)

    Not Available

    2008-09-01

    This is one in a series of sourcebooks to assist industrial personnel in understanding and optimizing motors and motor-driven systems

  15. Improving Motor and Drive System Performance: A Sourcebook for Industry

    SciTech Connect (OSTI)

    2010-06-25

    This is one in a series of sourcebooks to assist industrial personnel in understanding and optimizing motors and motor-driven systems.

  16. Turlock Irrigation District- PV Rebate

    Broader source: Energy.gov [DOE]

    Turlock Irrigation District (TID) offers an incentive program to their customers who install solar photovoltaic (PV) systems. In keeping with the terms of the California Solar Initiative, the inc...

  17. System and method for determining stator winding resistance in an AC motor using motor drives

    DOE Patents [OSTI]

    Lu, Bin; Habetler, Thomas G; Zhang, Pinjia

    2013-02-26

    A system and method for determining the stator winding resistance of AC motors is provided. The system includes an AC motor drive having an input connectable to an AC source and an output connectable to an input terminal of an AC motor, a pulse width modulation (PWM) converter having switches therein to control current flow and terminal voltages in the AC motor, and a control system connected to the PWM converter. The control system generates a command signal to cause the PWM converter to control an output of the AC motor drive corresponding to an input to the AC motor, selectively generates a modified command signal to cause the PWM converter to inject a DC signal into the output of the AC motor drive, and determines a stator winding resistance of the AC motor based on the DC signal of at least one of the voltage and current.

  18. Mounting arrangement for the drive system of an air-bearing spindle on a machine tool

    DOE Patents [OSTI]

    Lunsford, J.S.; Crisp, D.W.; Petrowski, P.L.

    1987-12-07

    The present invention is directed to a mounting arrangement for the drive system of an air-bearing spindle utilized on a machine tool such as a lathe. The mounting arrangement of the present invention comprises a housing which is secured to the casing of the air bearing in such a manner that the housing position can be selectively adjusted to provide alignment of the air-bearing drive shaft supported by the housing and the air-bearing spindle. Once this alignment is achieved the air between spindle and the drive arrangement is maintained in permanent alignment so as to overcome misalignment problems encountered in the operation of the machine tool between the air-bearing spindle and the shaft utilized for driving the air-bearing spindle.

  19. Evaluation of 2005 Honda Accord Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, R.H.; Burress, T.A.; Marlino, L.D.

    2006-09-11

    The Hybrid Electric Vehicle (HEV) program officially began in 1993 as a five-year, cost-shared partnership between the U.S. Department of Energy (DOE) and American auto manufacturers: General Motors, Ford, and Daimler Chrysler. Currently, HEV research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. The vehicle systems technologies subprogram, which is one of four subprograms under the FCVT program, supports the efforts of the FreedomCAR through a three-phase approach [1] intended to: (1) Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry's recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; (2) Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and (3) Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed under the vehicle systems subprogram will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in electric, and fuel-cell-powered vehicles.

  20. Evaluation of the 2007 Toyota Camry Hybrid Synergy Drive System

    SciTech Connect (OSTI)

    Burress, T A; Coomer, C L; Campbell, S L; Seiber, L E; Marlino, L D; Staunton, R H; Cunningham, J P

    2008-04-15

    The U.S. Department of Energy (DOE) and American automotive manufacturers General Motors, Ford, and DaimlerChrysler began a five-year, cost-shared partnership in 1993. Currently, hybrid electric vehicle (HEV) research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. Under the FCVT program, support is provided through a three-phase approach [1] which is intended to: • Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry’s recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; • Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and • Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed in this area will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in hybrid electric, electric, and fuel-cell-powered vehicles.

  1. Opportunities for Demand Response in California Agricultural Irrigation: A Scoping Study

    SciTech Connect (OSTI)

    Marks, Gary; Wilcox, Edmund; Olsen, Daniel; Goli, Sasank

    2013-01-02

    California agricultural irrigation consumes more than ten billion kilowatt hours of electricity annually and has significant potential for contributing to a reduction of stress on the grid through demand response, permanent load shifting, and energy efficiency measures. To understand this potential, a scoping study was initiated for the purpose of determining the associated opportunities, potential, and adoption challenges in California agricultural irrigation. The primary research for this study was conducted in two ways. First, data was gathered and parsed from published sources that shed light on where the best opportunities for load shifting and demand response lie within the agricultural irrigation sector. Secondly, a small limited survey was conducted as informal face-to-face interviews with several different California growers to get an idea of their ability and willingness to participate in permanent load shifting and/or demand response programs. Analysis of the data obtained from published sources and the survey reveal demand response and permanent load shifting opportunities by growing region, irrigation source, irrigation method, grower size, and utility coverage. The study examines some solutions for demand response and permanent load shifting in agricultural irrigation, which include adequate irrigation system capacity, automatic controls, variable frequency drives, and the contribution from energy efficiency measures. The study further examines the potential and challenges for grower acceptance of demand response and permanent load shifting in California agricultural irrigation. As part of the examination, the study considers to what extent permanent load shifting, which is already somewhat accepted within the agricultural sector, mitigates the need or benefit of demand response for agricultural irrigation. Recommendations for further study include studies on how to gain grower acceptance of demand response as well as other related studies such as

  2. Passive pavement-mounted acoustical linguistic drive alert system and method

    DOE Patents [OSTI]

    Kisner, Roger A.; Anderson, Richard L.; Carnal, Charles L.; Hylton, James O.; Stevens, Samuel S.

    2001-01-01

    Systems and methods are described for passive pavement-mounted acoustical alert of the occupants of a vehicle. A method of notifying a vehicle occupant includes providing a driving medium upon which a vehicle is to be driven; and texturing a portion of the driving medium such that the textured portion interacts with the vehicle to produce audible signals, the textured portion pattern such that a linguistic message is encoded into the audible signals. The systems and methods provide advantages because information can be conveyed to the occupants of the vehicle based on the location of the vehicle relative to the textured surface.

  3. An Inverter Packaging Scheme for an Integrated Segmented Traction Drive System

    SciTech Connect (OSTI)

    Su, Gui-Jia; Tang, Lixin; Ayers, Curtis William; Wiles, Randy H

    2013-01-01

    The standard voltage source inverter (VSI), widely used in electric vehicle/hybrid electric vehicle (EV/HEV) traction drives, requires a bulky dc bus capacitor to absorb the large switching ripple currents and prevent them from shortening the battery s life. The dc bus capacitor presents a significant barrier to meeting inverter cost, volume, and weight requirements for mass production of affordable EVs/HEVs. The large ripple currents become even more problematic for the film capacitors (the capacitor technology of choice for EVs/HEVs) in high temperature environments as their ripple current handling capability decreases rapidly with rising temperatures. It is shown in previous work that segmenting the VSI based traction drive system can significantly decrease the ripple currents and thus the size of the dc bus capacitor. This paper presents an integrated packaging scheme to reduce the system cost of a segmented traction drive.

  4. Next Generation Environmentally-Friendly Driving Feedback Systems Research and Development

    SciTech Connect (OSTI)

    Barth, Matthew; Boriboonsomsin, Kanok

    2014-12-31

    The objective of this project is to design, develop, and demonstrate a next-generation, federal safety- and emission-complaint driving feedback system that can be deployed across the existing vehicle fleet and improve fleet average fuel efficiency by at least 2%. The project objective was achieved with the driving feedback system that encourages fuel-efficient vehicle travel and operation through: 1) Eco-Routing Navigation module that suggests the most fuel-efficient route from one stop to the next, 2) Eco-Driving Feedback module that provides sensible information, recommendation, and warning regarding fuel-efficient vehicle operation, and 3) Eco-Score and Eco-Rank module that provides a means for driving performance tracking, self-evaluation, and peer comparison. The system also collects and stores vehicle travel and operation data, which are used by Algorithm Updating module to customize the other modules for specific vehicles and adapts them to specific drivers over time. The driving feedback system was designed and developed as an aftermarket technology that can be retrofitted to vehicles in the existing fleet. It consists of a mobile application for smart devices running Android operating system, a vehicle on-board diagnostics connector, and a data server. While the system receives and utilizes real-time vehicle and engine data from the vehicle’s controller area network bus through the vehicle’s on-board diagnostic connector, it does not modify or interfere with the vehicle’s controller area network bus, and thus, is in compliance with federal safety and emission regulations. The driving feedback system was demonstrated and then installed on 45 vehicles from three different fleets for field operational test. These include 15 private vehicles of the general public, 15 pickup trucks of the California Department of Transportation that are assigned to individual employees for business use, and 15 shuttle buses of the Riverside Transit Agency that are used

  5. FULLY INTEGRATED HIGH SPEED MEGAWATT CLASS MOTOR AND HIGH FREQUENCY VARIABLE SPEED DRIVE SYSTEM

    Broader source: Energy.gov [DOE]

    Clemson University – North Charleston, SC New motor power converter technologies will be used to develop a pre-commercial megawatt class variable speed drive. The fully integrated prototype system will be made by TECO Westinghouse Motor Company in its Round Rock, TX facility and be demonstrated at Clemson’s eGRID Center. Fact sheet coming soon.

  6. Engine having hydraulic and fan drive systems using a single high pressure pump

    DOE Patents [OSTI]

    Bartley, Bradley E.; Blass, James R.; Gibson, Dennis H.

    2000-01-01

    An engine comprises a hydraulic system attached to an engine housing that includes a high pressure pump and a hydraulic fluid flowing through at least one passageway. A fan drive system is also attached to the engine housing and includes a hydraulic motor and a fan which can move air over the engine. The hydraulic motor includes an inlet fluidly connected to the at least one passageway.

  7. Detection and mitigating rod drive control system degradation in Westinghouse PWRs

    SciTech Connect (OSTI)

    Gunther, W.; Sullivan, K.

    1990-01-01

    A study of the effects of aging on the Westinghouse Control Rod Drive (CRD) System was performed as part of the US NRC's Nuclear Plant aging Research (NPAR) Program. For the study, the CRD system boundary includes the power and logic cabinets associated with the manual control rod movement, and the control rod mechanism itself. The aging-related degradation of the interconnecting cables and connectors and the rod position indicating system also were considered. This paper presents the results of that study pertaining to the electrical and instrumentation portions of the CRD system including ways to detect and mitigate system degradation.

  8. Current Drive for Plasma Via Vertically-Structured Permanent Magnet System.

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | Princeton Plasma Physics Lab Current Drive for Plasma Via Vertically-Structured Permanent Magnet System. This invention uses the rotatoin of permanent magnets to generate a plasma current with toroidal fusion confinement devices. This particular device strategically places two rings of magnets above and below the ferromagnetic core in order to maximize both the efficiency and plasma current. No.: M-872 Inventor(s): Ali Zolfaghari

  9. Four Pulse Drive System for the Beam Induction Cells for DARHT Axis 2

    SciTech Connect (OSTI)

    Downing, J.; Carlson, R.; Melton, J.; Fockler, J.

    1999-06-28

    The proposed drive system allows for the generation of up to four (4) high-quality radiographic pulses along one line-of-sight, having arbitrary pulse spacing ({approximately}500 ns), using demonstrated technologies. This concept uses a four-pulse drive system to drive both a 16-MeV ensemble of 250-kV, 4-kA induction cells and a four-pulse, 4-MeV injector. The key to this approach lies in the method used to combine four pulses from different generators in a manner that does not compromise the voltage flatness requirement of {+-} 1%. The induction cells use core material for only a single pulse. A simple reverse bias circuit is used to reset the cores between pulses, and the insulator has been redesigned to withstand the reverse reset voltage. This approach can be installed in stages so that the facility can be used for dual axis radiography while implementing the multi-pulsing capability. A dual double-pulse format has been identified which provides a sequence of two pulses along one line-of-sight within a 2-{micro}sec window. The 2-{micro}sec windows can be separated by arbitrary time intervals of 2- to 10-{micro}sec.

  10. The targeted heating and current drive applications for the ITER electron cyclotron system

    SciTech Connect (OSTI)

    Henderson, M.; Darbos, C.; Gandini, F.; Gassmann, T.; Loarte, A.; Omori, T.; Purohit, D.; Saibene, G.; Gagliardi, M.; Farina, D.; Figini, L.; Hanson, G.; Poli, E.; Takahashi, K.

    2015-02-15

    A 24 MW Electron Cyclotron (EC) system operating at 170 GHz and 3600 s pulse length is to be installed on ITER. The EC plant shall deliver 20 MW of this power to the plasma for Heating and Current Drive (H and CD) applications. The EC system is designed for plasma initiation, central heating, current drive, current profile tailoring, and Magneto-hydrodynamic control (in particular, sawteeth and Neo-classical Tearing Mode) in the flat-top phase of the plasma. A preliminary design review was performed in 2012, which identified a need for extended application of the EC system to the plasma ramp-up, flattop, and ramp down phases of ITER plasma pulse. The various functionalities are prioritized based on those applications, which can be uniquely addressed with the EC system in contrast to other H and CD systems. An initial attempt has been developed at prioritizing the allocated H and CD applications for the three scenarios envisioned: ELMy H-mode (15 MA), Hybrid (∼12 MA), and Advanced (∼9 MA) scenarios. This leads to the finalization of the design requirements for the EC sub-systems.

  11. Rainwater Harvesting Potential for Irrigation Map | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    for Irrigation Map Rainwater Harvesting Potential for Irrigation Map Harvested rainwater can provide a key source of irrigation for federal facilities. Rainwater harvesting systems capture, divert, and store precipitation from rooftops for later use. The Federal Energy Management Program (FEMP) developed a map to identify the potential for harvesting rainwater specifically for irrigation, to help federal agencies strategically identify locations in the U.S. that are particularly well suited to

  12. A Novel MagPipe Pipeline transportation system using linear motor drives

    SciTech Connect (OSTI)

    Fang, J.R.; Montgomery, D.B.; Roderick, L.

    2009-11-15

    A novel capsule pipeline transportation system using linear motor drives, called Magplane MagPipe, is under development with the intention to replace trucks and railways for hauling materials from the mine to the rail head, power plant, or processing plant with reduced operating cost and energy consumption. The initial demonstration of a MagPipe line in Inner Mongolia will be a 500-m-long double-pipe coal transport system with the design transportation capacity of 3 Mega-Mg per year. The pipeline consists of 6-m-long plastic pipe modules with an I-beam suspension system inside the pipe to carry sets of five coupled capsules. The pipe will also contain noncontinuous motor winding modules spaced at 50-m intervals. A set of Halbach-arrayed permanent magnets on the bottom of the capsules interact with the linear motor windings to provide propulsion. The motor is driven by variable frequency drives outside the pipe to control the speed. This paper briefly describes the overall MagPipe pipeline transportation system, including the preliminary conclusions of the linear synchronous motor analysis.

  13. Characterization of the Support and Drive System of the PETRA III APPLE Undulator

    SciTech Connect (OSTI)

    Bahrdt, J.; Baecker, H.-J.; Frentrup, W.; Gaupp, A.; Gottschlich, S.; Kuhn, C.; Scheer, M.; Schulz, B.; Gast, M.; Englisch, U.; Schoeps, A.; Tischer, M.

    2010-06-23

    Helmholtzzentrum Berlin has built an APPLE II undulator for the storage ring PETRA III. The device has a total length of 5m and a minimum gap of 11mm. The high magnetic forces in particular in the inclined mode have been analyzed by means of finite element methods (FEM). Specific mechanic components such as flexible joints have been optimized to cope with the gap- and shift-dependent 3D-forces and a sophisticated control and drive system has been implemented. After completion of the device, detailed laser interferometer measurements for all operation modes have been performed. The data are compared to the FEM simulations.

  14. A high performance inverter-fed drive system of an interior permanent magnet synchronous machine

    SciTech Connect (OSTI)

    Bose, B.K.

    1987-01-01

    A high performance fully operational four-quadrant control scheme of an interior permanent magnet synchronous machine is described. The machine operates smoothly with full performance in constant-torque region as well as in flux-weakening constant-power region in both the directions of motion. The transition between constant-torque region and constant-power region is very smooth at all conditions of operation. The control in constant-torque region is based on vector or field-oriented technique with the direct-axis aligned to the total stator flux, whereas the constant-power region control is implemented by orientation of torque angle of the impressed square-wave voltage through the feedforward vector rotator. The control system is implemented digitally using distributed microcomputer system and all the essential feedback signals, such as torque, flux, etc., are estimated with precision. The control has been described with an outer torque control loop primarily for traction type applications, but speed and position control loops can be easily added to extend its application to other industrial drives. A 70 hp drive system using a Neodymium-Iron-Boron PM machine and transistor PWM inverter has been designed and extensively tested in laboratory on a dynamometer, and performances are found to be excellent.

  15. Improving Energy Efficiency in Pharmaceutical ManufacturingOperations -- Part I: Motors, Drives and Compressed Air Systems

    SciTech Connect (OSTI)

    Galitsky, Christina; Chang, Sheng-chien; Worrell, Ernst; Masanet,Eric

    2006-04-01

    In Part I of this two-part series, we focus on efficient use of motors, drives and pumps, both for process equipment and compressed air systems. Pharmaceutical manufacturing plants in the U.S. spend nearly $1 billion each year for the fuel and electricity they need to keep their facilities running (Figure 1, below). That total that can increase dramatically when fuel supplies tighten and oil prices rise, as they did last year. Improving energy efficiency should be a strategic goal for any plant manager or manufacturing professional working in the drug industry today. Not only can energy efficiency reduce overall manufacturing costs, it usually reduces environmental emissions, establishing a strong foundation for a corporate greenhouse-gas-management program. For most pharmaceutical manufacturing plants, Heating, Ventilation and Air Conditioning (HVAC) is typically the largest consumer of energy, as shown in Table 1 below. This two-part series will examine energy use within pharmaceutical facilities, summarize best practices and examine potential savings and return on investment. In this first article, we will focus on efficient use of motors, drives and pumps, both for process equipment and compressed air systems. Part 2, to be published in May, will focus on overall HVAC systems, building management and boilers.

  16. Apparatus and method for reducing inductive coupling between levitation and drive coils within a magnetic propulsion system

    DOE Patents [OSTI]

    Post, Richard F.

    2001-01-01

    An apparatus and method is disclosed for reducing inductive coupling between levitation and drive coils within a magnetic levitation system. A pole array has a magnetic field. A levitation coil is positioned so that in response to motion of the magnetic field of the pole array a current is induced in the levitation coil. A first drive coil having a magnetic field coupled to drive the pole array also has a magnetic flux which induces a parasitic current in the levitation coil. A second drive coil having a magnetic field is positioned to attenuate the parasitic current in the levitation coil by canceling the magnetic flux of the first drive coil which induces the parasitic current. Steps in the method include generating a magnetic field with a pole array for levitating an object; inducing current in a levitation coil in response to motion of the magnetic field of the pole array; generating a magnetic field with a first drive coil for propelling the object; and generating a magnetic field with a second drive coil for attenuating effects of the magnetic field of the first drive coil on the current in the levitation coil.

  17. Desert landscape irrigation

    SciTech Connect (OSTI)

    Quinones, R.

    1995-06-01

    Industrialization can take place in an arid environment if a long term, overall water management program is developed. The general rule to follow is that recharge must equal or exceed use. The main problem encountered in landscape projects is that everyone wants a lush jungle setting, tall shade trees, ferns, with a variety of floral arrangements mixed in. What we want, what we can afford, and what we get are not always the same. Vegetation that requires large quantities of water are not native to any desert. Surprisingly; there are various types of fruit trees, and vegetables that will thrive in the desert. Peaches, plums, nut trees, do well with drip irrigation as well as tomatoes. Shaded berry plans will also do well, the strawberry being one. In summary; if we match our landscape to our area, we can then design our irrigation system to maintain our landscape and grow a variety of vegetation in any arid or semiarid environment. The application of science and economics to landscaping has now come of age.

  18. A Segmented Drive System with a Small DC Bus Capacitor | Department of

    Broader source: Energy.gov (indexed) [DOE]

    Energy apep_08_su.pdf (346.73 KB) More Documents & Publications A Segmented Drive Inverter Topology with a Small DC Bus Capacitor A Segmented Drive Inverter Topology with a Small DC Bus Capacitor A Segmented Drive Inverter Topology with a Small DC Bus Capacitor

  19. Self locking drive system for rotating plug of a nuclear reactor

    DOE Patents [OSTI]

    Brubaker, James E.

    1979-01-01

    This disclosure describes a self locking drive system for rotating the plugs on the head of a nuclear reactor which is able to restrain plug motion if a seismic event should occur during reactor refueling. A servomotor is engaged via a gear train and a bull gear to the plug. Connected to the gear train is a feedback control system which allows the motor to rotate the plug to predetermined locations for refueling of the reactor. The gear train contains a self locking double enveloping worm gear set. The worm gear set is utilized for its self locking nature to prevent unwanted rotation of the plugs as the result of an earthquake. The double enveloping type is used because its unique contour spreads the load across several teeth providing added strength and allowing the use of a conventional size worm.

  20. Merced Irrigation District- PV Buydown Program

    Broader source: Energy.gov [DOE]

    Merced Irrigation District (MID) offers its residential, commercial and non-profit customers a rebate for installing solar electric photovoltaic (PV) systems on their homes and offices. For 2015,...

  1. Idaho Power- Irrigation Efficiency Rewards Program

    Broader source: Energy.gov [DOE]

    Idaho Power provides incentives for energy-efficient equipment and design in irrigation systems. Incentives are available for a wide variety of specific equipment types as well as custom projects....

  2. Linear motor drive system for continuous-path closed-loop position control of an object

    DOE Patents [OSTI]

    Barkman, William E.

    1980-01-01

    A precision numerical controlled servo-positioning system is provided for continuous closed-loop position control of a machine slide or platform driven by a linear-induction motor. The system utilizes filtered velocity feedback to provide system stability required to operate with a system gain of 100 inches/minute/0.001 inch of following error. The filtered velocity feedback signal is derived from the position output signals of a laser interferometer utilized to monitor the movement of the slide. Air-bearing slides mounted to a stable support are utilized to minimize friction and small irregularities in the slideway which would tend to introduce positioning errors. A microprocessor is programmed to read command and feedback information and converts this information into the system following error signal. This error signal is summed with the negative filtered velocity feedback signal at the input of a servo amplifier whose output serves as the drive power signal to the linear motor position control coil.

  3. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System Interim Report

    SciTech Connect (OSTI)

    Ayers, C.W.

    2004-11-23

    Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  4. EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery and Component Manufacturing Initiative

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to provide a financial assistance grant under the American Recovery and Reinvestment Act of 2009 (ARRA) to Delphi Automotive Systems, Limited Liability Corporation (LLC) (Delphi). Delphi proposes to construct a laboratory referred to as the “Delphi Kokomo, IN Corporate Technology Center” (Delphi CTC Project) and retrofit a manufacturing facility. The project would advance DOE’s Vehicle Technology Program through manufacturing and testing of electric-drive vehicle components as well as assist in the nation’s economic recovery by creating manufacturing jobs in the United States. The Delphi CTC Project would involve the construction and operation of a 10,700 square foot (ft2) utilities building containing boilers and heaters and a 70,000 ft2 engineering laboratory, as well as site improvements (roads, parking, buildings, landscaping,and lighting).

  5. EV Everywhere: Electric Drive Systems Bring Power to Plug-in Electric Vehicles

    Broader source: Energy.gov [DOE]

    Find out how the Energy Department's Vehicles Technologies Office is helping reduce the cost of plug-in electric vehicles through research and development of electric drive technologies.

  6. Best Management Practice #5: Water-Efficient Irrigation

    Broader source: Energy.gov [DOE]

    Water efficiency must be considered from the initial irrigation system design phase through installation to ensure optimal performance. Consistent management and maintenance is also essential.

  7. Evaluation of 2004 Toyota Prius Hybrid Electic Drive System Interim Report - Revised

    SciTech Connect (OSTI)

    Ayers, C.W.; Hsu, J.S.; Marlino, L.D.; Miller, C.W.; Ott, G.W., Jr.; Oland, C.B.; Burress, T.A.

    2007-07-31

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery-powered electric motor. Both of these motive power sources are capable of providing mechanical drive power for the vehicle. The engine can deliver a peak power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak power output of 50 kW at 1300 rpm. Together, this engine-motor combination has a specified peak power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  8. Control system to reduce the effects of friction in drive trains of continuous-path-positioning systems. [Patent application

    DOE Patents [OSTI]

    Green, W.L.

    1980-12-01

    An improved continuous-path-positioning servo-control system is provided for reducing the effects of friction arising at very low cutting speeds in the drive trains of numerically controlled cutting machines, and the like. The improvement comprises a feed forward network for altering the gain of the servo-control loop at low positioning velocities to prevent stick-slip movement of the cutting tool holder being positioned by the control system. The feed forward network shunts conventional lag-compensators in the control loop, or loops, so that the error signal used for positioning varies linearly when the value is small, but being limited for larger values. Thus, at higher positioning speeds there is little effect of the added component upon the control being achieved.

  9. Vehicle Technologies Office Merit Review 2015: Traction Drive Systems with Integrated Wireless Charging

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given by Oak Ridge National Laboratory at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about traction drive...

  10. Idaho Power- Irrigation Efficiency Rewards Rebate Program

    Broader source: Energy.gov [DOE]

    Through Idaho Power's Irrigation Efficiency Rewards program, agricultural irrigation customers qualify to receive an incentive for a portion of the cost to install a new, more efficient irrigation...

  11. Reactivity-controlled compression ignition drive cycle emissions and fuel economy estimations using vehicle system simulations

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Curran, Scott J.; Gao, Zhiming; Wagner, Robert M.

    2014-12-22

    In-cylinder blending of gasoline and diesel to achieve reactivity-controlled compression ignition has been shown to reduce NOX and soot emissions while maintaining or improving brake thermal efficiency as compared with conventional diesel combustion. The reactivity-controlled compression ignition concept has an advantage over many advanced combustion strategies in that the fuel reactivity can be tailored to the engine speed and load, allowing stable low-temperature combustion to be extended over more of the light-duty drive cycle load range. In this paper, a multi-mode reactivity-controlled compression ignition strategy is employed where the engine switches from reactivity-controlled compression ignition to conventional diesel combustion whenmore » speed and load demand are outside of the experimentally determined reactivity-controlled compression ignition range. The potential for reactivity-controlled compression ignition to reduce drive cycle fuel economy and emissions is not clearly understood and is explored here by simulating the fuel economy and emissions for a multi-mode reactivity-controlled compression ignition–enabled vehicle operating over a variety of US drive cycles using experimental engine maps for multi-mode reactivity-controlled compression ignition, conventional diesel combustion, and a 2009 port-fuel injected gasoline engine. Drive cycle simulations are completed assuming a conventional mid-size passenger vehicle with an automatic transmission. Multi-mode reactivity-controlled compression ignition fuel economy simulation results are compared with the same vehicle powered by a representative 2009 port-fuel injected gasoline engine over multiple drive cycles. Finally, engine-out drive cycle emissions are compared with conventional diesel combustion, and observations regarding relative gasoline and diesel tank sizes needed for the various drive cycles are also summarized.« less

  12. Reactivity-controlled compression ignition drive cycle emissions and fuel economy estimations using vehicle system simulations

    SciTech Connect (OSTI)

    Curran, Scott J.; Gao, Zhiming; Wagner, Robert M.

    2014-12-22

    In-cylinder blending of gasoline and diesel to achieve reactivity-controlled compression ignition has been shown to reduce NOX and soot emissions while maintaining or improving brake thermal efficiency as compared with conventional diesel combustion. The reactivity-controlled compression ignition concept has an advantage over many advanced combustion strategies in that the fuel reactivity can be tailored to the engine speed and load, allowing stable low-temperature combustion to be extended over more of the light-duty drive cycle load range. In this paper, a multi-mode reactivity-controlled compression ignition strategy is employed where the engine switches from reactivity-controlled compression ignition to conventional diesel combustion when speed and load demand are outside of the experimentally determined reactivity-controlled compression ignition range. The potential for reactivity-controlled compression ignition to reduce drive cycle fuel economy and emissions is not clearly understood and is explored here by simulating the fuel economy and emissions for a multi-mode reactivity-controlled compression ignition–enabled vehicle operating over a variety of US drive cycles using experimental engine maps for multi-mode reactivity-controlled compression ignition, conventional diesel combustion, and a 2009 port-fuel injected gasoline engine. Drive cycle simulations are completed assuming a conventional mid-size passenger vehicle with an automatic transmission. Multi-mode reactivity-controlled compression ignition fuel economy simulation results are compared with the same vehicle powered by a representative 2009 port-fuel injected gasoline engine over multiple drive cycles. Finally, engine-out drive cycle emissions are compared with conventional diesel combustion, and observations regarding relative gasoline and diesel tank sizes needed for the various drive cycles are also summarized.

  13. Anti-backlash drive systems for multi-degree freedom devices

    DOE Patents [OSTI]

    Lungwen Tsai; Sunlai Chang.

    1993-09-14

    A new and innovative concept is described for the control of backlash in gear-coupled transmission mechanisms. The concept utilizes redundant unidirectional drives to assure positive coupling of gear meshes at all times. Based on this concept, a methodology for the enumeration of admissible redundant-drive backlash-free robotic mechanisms has been established. Some typical two- and three-DOF mechanisms are disclosed. Furthermore, actuator torques have been derived as functions of either joint torques or end-effector dynamic performance requirements. A redundantly driven gear coupled transmission mechanism manipulator has a fail-safe advantage in that, except of the loss of backlash control, it can continue to function when one of its actuators fails. A two-DOF backlash-free arm has been reduced to practice to demonstrate the principle. 20 figures.

  14. Anti-backlash drive systems for multi-degree freedom devices

    DOE Patents [OSTI]

    Tsai, Lung-Wen; Chang, Sun-Lai

    1993-01-01

    A new and innovative concept for the control of backlash in gear-coupled transmission mechanisms. The concept utilizes redundant unidirectional drives to assure positive coupling of gear meshes at all times. Based on this concept, a methodology for the enumeration of admissible redundant-drive backlash-free robotic mechanisms has been established. Some typical two- and three-DOF mechanisms are disclosed. Furthermore, actuator torques have been derived as functions of either joint torques or end-effector dynamic performance requirements. A redundantly driven gear coupled transmission mechanism manipulator has a fail-safe advantage in that, except of the loss of backlash control, it can continue to function when one of its actuators fails. A two-DOF backlash-free arm has been reduced to practice to demonstrate the principle.

  15. Irrigation and the demand for electricity. Progress report

    SciTech Connect (OSTI)

    Maddigan, R. J.; Chern, W. S.; Gallagher, C. A.

    1980-03-01

    In order to anticipate the need for generating capacity, utility planners must estimate the future growth in electricity demand. The need for demand forecasts is no less important for the nation's Rural Electric Cooperatives (RECs) than it is for the investor-owned utilities. The RECs serve an historically agrarian region; therefore, the irrigation sector accounts for a significant portion of the western RECs' total demand. A model is developed of the RECs' demand for electricity used in irrigation. The model is a simultaneous equation system which focuses on both the short-run utilization of electricity in irrigation and the long-run determination of the number of irrigators using electricity. Irrigation demand is described by a set of equations in which the quantity of electricity demanded, the average electricity price, the number of irrigation customers, and the ratio of electricity to total energy used for irrigation are endogenous. The structural equations are estimated using pooled state-level data for the period 1961-1977. In light of the model's results, the impact of changes in relative energy prices on irrigation can be examined.

  16. South San Joaquin Irrigation District

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Benefits of Local Control * Local accountability and transparency * Rate design based on ... service, innovation Utility Business Models * Rural Electric Co-ops * Irrigation ...

  17. Method and system for determining the torque required to launch a vehicle having a hybrid drive-train

    DOE Patents [OSTI]

    Hughes, Douglas A.

    2006-04-04

    A method and system are provided for determining the torque required to launch a vehicle having a hybrid drive-train that includes at least two independently operable prime movers. The method includes the steps of determining the value of at least one control parameter indicative of a vehicle operating condition, determining the torque required to launch the vehicle from the at least one determined control parameter, comparing the torque available from the prime movers to the torque required to launch the vehicle, and controlling operation of the prime movers to launch the vehicle in response to the comparing step. The system of the present invention includes a control unit configured to perform the steps of the method outlined above.

  18. Overview of the Safety Issues Associated with the Compressed Natural Gas Fuel System and Electric Drive System in a Heavy Hybrid Electric Vehicle

    SciTech Connect (OSTI)

    Nelson, S.C.

    2002-11-14

    This report evaluates the hazards that are unique to a compressed-natural-gas (CNG)-fueled heavy hybrid electric vehicle (HEV) design compared with a conventional heavy vehicle. The unique design features of the heavy HEV are the CNG fuel system for the internal-combustion engine (ICE) and the electric drive system. This report addresses safety issues with the CNG fuel system and the electric drive system. Vehicles on U. S. highways have been propelled by ICEs for several decades. Heavy-duty vehicles have typically been fueled by diesel fuel, and light-duty vehicles have been fueled by gasoline. The hazards and risks posed by ICE vehicles are well understood and have been generally accepted by the public. The economy, durability, and safety of ICE vehicles have established a standard for other types of vehicles. Heavy-duty (i.e., heavy) HEVs have recently been introduced to U. S. roadways, and the hazards posed by these heavy HEVs can be compared with the hazards posed by ICE vehicles. The benefits of heavy HEV technology are based on their potential for reduced fuel consumption and lower exhaust emissions, while the disadvantages are the higher acquisition cost and the expected higher maintenance costs (i.e., battery packs). The heavy HEV is more suited for an urban drive cycle with stop-and-go driving conditions than for steady expressway speeds. With increasing highway congestion and the resulting increased idle time, the fuel consumption advantage for heavy HEVs (compared with conventional heavy vehicles) is enhanced by the HEVs' ability to shut down. Any increase in fuel cost obviously improves the economics of a heavy HEV. The propulsion system for a heavy HEV is more complex than the propulsion system for a conventional heavy vehicle. The heavy HEV evaluated in this study has in effect two propulsion systems: an ICE fueled by CNG and an electric drive system with additional complexity and failure modes. This additional equipment will result in a less

  19. A microcomputer-based control and simulation of an advanced IPM (interior permanent magnet) synchronous machine drive system for electric vehicle propulsion

    SciTech Connect (OSTI)

    Bose, B.K.; Szczesny, P.M.

    1987-01-01

    Advanced digital control and computer-aided control system design techniques are playing key roles in the complex drive system design and control implementation. The paper describes a high performance microcomputer-based control and digital simulation of an inverter-fed interior permanent magnet (IPM) synchronous machine which uses Neodymium-Iron-Boron magnet. The fully operational four-quadrant drive system includes constant-torque region with zero speed operation and high speed field-weakening constant-power region. The control uses vector or field-oriented technique in constant-torque region with the direct axis aligned to the stator flux, whereas the constant-power region control is based on torque angle orientation of the impressed square-wave voltage. All the key feedback signals for the control are estimated with precision. The drive system is basically designed with an outer torque control loop for electric vehicle appliation, but speed and position control loops can be added for other industrial applications. The distributed microcomputer-based control system is based on Intel-8096 microcontroller and Texas Instruments TMS32010 type digital signal processor. The complete drive system has been simulated using the VAX-based simulation language SIMMON to verify the feasibility of the control laws and to study the performances of the drive system. The simulation results are found to have excellent correlation with the laboratory breadboard tests. 19 refs., 14 figs., 5 tabs.

  20. Government of Maharashtra irrigation Department GOMID | Open...

    Open Energy Info (EERE)

    irrigation Department (GOMID) Place: Maharashtra, India Sector: Hydro Product: Mumbai-based small hydro project developer. References: Government of Maharashtra irrigation...

  1. Merced Irrigation District | Open Energy Information

    Open Energy Info (EERE)

    Irrigation District Place: California Website: mercedid.com Twitter: @MercedID Facebook: https:www.facebook.comMercedIrrigationDistrict Outage Hotline: 209-722-3041...

  2. Increasing water holding capacity for irrigation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    determine the sources of sediment and recommend solutions for irrigation sediment buildup management. April 3, 2012 Santa Cruz Irrigation District (SCID) Kenny Salazar, owner of...

  3. Idaho Power- Irrigation Efficiency Rewards Program

    Broader source: Energy.gov [DOE]

    Through Idaho Power's Irrigation Efficiency Rewards program, agricultural irrigation customers can qualify to receive an incentive for a portion of the cost to install a new, more efficient...

  4. Electric Drive Dynamic Thermal System Model for Advanced Vehicle Propulsion Technologies: Cooperative Research and Development Final Report, CRADA Number CRD-09-360

    SciTech Connect (OSTI)

    Bennion, K.

    2013-10-01

    Electric drive systems, which include electric machines and power electronics, are a key enabling technology for advanced vehicle propulsion systems that reduce the dependence of the U.S. transportation sector on petroleum. However, to penetrate the market, these electric drive technologies must enable vehicle solutions that are economically viable. The push to make critical electric drivesystems smaller, lighter, and more cost-effective brings respective challenges associated with heat removal and system efficiency. In addition, the wide application of electric drive systems to alternative propulsion technologies ranging from integrated starter generators, to hybrid electric vehicles, to full electric vehicles presents challenges in terms of sizing critical components andthermal management systems over a range of in-use operating conditions. This effort focused on developing a modular modeling methodology to enable multi-scale and multi-physics simulation capabilities leading to generic electric drive system models applicable to alternative vehicle propulsion configurations. The primary benefit for the National Renewable Energy Laboratory (NREL) is the abilityto define operating losses with the respective impact on component sizing, temperature, and thermal management at the component, subsystem, and system level. However, the flexible nature of the model also allows other uses related to evaluating the impacts of alternative component designs or control schemes depending on the interests of other parties.

  5. Statistical Characterization of School Bus Drive Cycles Collected via Onboard Logging Systems

    SciTech Connect (OSTI)

    Duran, A.; Walkowicz, K.

    2013-10-01

    In an effort to characterize the dynamics typical of school bus operation, National Renewable Energy Laboratory (NREL) researchers set out to gather in-use duty cycle data from school bus fleets operating across the country. Employing a combination of Isaac Instruments GPS/CAN data loggers in conjunction with existing onboard telemetric systems resulted in the capture of operating information for more than 200 individual vehicles in three geographically unique domestic locations. In total, over 1,500 individual operational route shifts from Washington, New York, and Colorado were collected. Upon completing the collection of in-use field data using either NREL-installed data acquisition devices or existing onboard telemetry systems, large-scale duty-cycle statistical analyses were performed to examine underlying vehicle dynamics trends within the data and to explore vehicle operation variations between fleet locations. Based on the results of these analyses, high, low, and average vehicle dynamics requirements were determined, resulting in the selection of representative standard chassis dynamometer test cycles for each condition. In this paper, the methodology and accompanying results of the large-scale duty-cycle statistical analysis are presented, including graphical and tabular representations of a number of relationships between key duty-cycle metrics observed within the larger data set. In addition to presenting the results of this analysis, conclusions are drawn and presented regarding potential applications of advanced vehicle technology as it relates specifically to school buses.

  6. Computer-Aided Engineering for Electric-Drive Vehicle Batteries

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Computer-Aided Engineering for Electric-Drive Vehicle Batteries - Sandia Energy Energy ... Energy Storage Components and Systems Batteries Electric Drive Systems Hydrogen Materials ...

  7. PP-174 Imperial Irrigation District | Department of Energy

    Energy Savers [EERE]

    4 Imperial Irrigation District PP-174 Imperial Irrigation District Presidential permit authorizing Imperial Irrigation District to construct, operate, and maintain electric ...

  8. Best Management Practice #5: Water-Efficient Irrigation | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    5: Water-Efficient Irrigation Best Management Practice 5: Water-Efficient Irrigation Best Management Practice 5: Water-Efficient Irrigation Water efficiency must be considered ...

  9. DrivePy

    Energy Science and Technology Software Center (OSTI)

    2014-08-30

    DrivePy is physics-based drivetrain model that sizes drivetrain components based on aerodynamic and operational loads for use in a systems engineering model. It also calculates costs based on empirical data collected by NREL's National Wind Technology Center.

  10. Traction Drive System Modeling

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  11. Drive reconfiguration mechanism for tracked robotic vehicle

    DOE Patents [OSTI]

    Willis, W. David

    2000-01-01

    Drive reconfiguration apparatus for changing the configuration of a drive unit with respect to a vehicle body may comprise a guide system associated with the vehicle body and the drive unit which allows the drive unit to rotate about a center of rotation that is located at about a point where the drive unit contacts the surface being traversed. An actuator mounted to the vehicle body and connected to the drive unit rotates the drive unit about the center of rotation between a first position and a second position.

  12. Economic impacts of irrigation load management controls

    SciTech Connect (OSTI)

    Taylor, D.C. )

    1988-01-01

    Irrigators subject to load management controls experience electric power interruptions during periods of peak power demand. The resulting interruptions in irrigation pumping may result in moisture stress-induced crop yield reductions. The results of analysis show a great sensitivity of irrigator incomes to such yield losses. The sensitivity is of such a magnitude that rural electric cooperatives (RECs) would have to offer load management incentives of at least five times their monthly demand charges for irrigators under typical conditions (not oversized irrigation pumps) to remain under load control when irrigated crops are experiencing yield-reducing moisture stress. Incentives of this magnitude cannot be economically justified by most RECs. Thus, provision for the voluntary withdrawal of irrigators from load control is an essential feature of most workable and effective irrigation laod management programs.

  13. Irrigation Hardware Upgrades

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    reduce system pressure, causing a poor sprinkler distribution pattern, reducing system efficiency and increasing costs. As motors have to work harder to make for the loss in...

  14. Measuring Transpiration to Regulate Winter Irrigation Rates

    SciTech Connect (OSTI)

    Samuelson, Lisa [Auburn University] [Auburn University

    2006-11-08

    Periodic transpiration (monthly sums) in a young loblolly pine plantation between ages 3 and 6 was measured using thermal dissipation probes. Fertilization and fertilization with irrigation were better than irrigation alone in increasing transpiration of young loblolly pines during winter months, apparently because of increased leaf area in fertilized trees. Irrigation alone did not significantly increase transpiration compared with the non-fertilized and non-irrigated control plots.

  15. Stand-alone irrigation pumping with wind energy

    SciTech Connect (OSTI)

    Clark, R.N.

    1982-12-01

    Windpower is one of the oldest forms of energy used for pumping water. Several thousand windmills are still used today to provide water for livestock and domestic needs. Because of the large water volume needed for irrigation, irrigators have selected natural gas, electricity, or diesel fuel as power sources for their irrigation pump. Wind turbines have been successfully used to generate electricity to supplement electrical requirements of irrigation systems; however, not all irrigation pumps have electricity readily available. Because of the need for an independent, high-volume pumping system powered by the wind, the USDA-ARS, Bushland, TX and the Alternative Energy Institute, Canyon, TX have designed and constructed a stand-alone wind-powered pumping system. The initial effort was an in-depth study of all types of pumps in order to locate a pump which could deliver a steady 15-to-20 l/s flow rate while the input power varied in rpm and torque. A progressive-cavity pump was selected as being best for use in moderate and deep well applications where the total head was more than 15 m. A 10-cm progressive-cavity pump was purchased and installed on a 4-kW vertical-axis wind turbine with a mechanical linkage between the wind turbine and pump. Performance data indicated that flow was 10 l/s, and head 12 m at a windspeed of 16 m/s. When the windspeed dropped to 9 m/s, the pumping load caused the wind turbine to stall. Because of the highly variable power output of the wind turbine, no presently-manufactured pump is satisfactory for stand-alone irrigation pumping.

  16. Holiday Food Drive

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Food Drive Holiday Food Drive Laboratory employees helped donate 300 boxes of nonperishable food items and 360 frozen turkeys during the 2015 annual food drive. September 16, 2013 LANL employees organize food for the Holiday Food Drive. Contacts Annual Food & Holiday Gift Drives Mike Martinez (505) 699-3388 Community Partnerships Office (505) 665-4400 Email Helping feed Northern New Mexico families During the Laboratory's 2015 Annual Food Drive, employees and subcontract workers once again

  17. Air-Cooled Stack Freeze Tolerance Freeze Failure Modes and Freeze Tolerance Strategies for GenDriveTM Material Handling Application Systems and Stacks Final Scientific Report

    SciTech Connect (OSTI)

    Hancock, David, W.

    2012-02-14

    Air-cooled stack technology offers the potential for a simpler system architecture (versus liquid-cooled) for applications below 4 kilowatts. The combined cooling and cathode air allows for a reduction in part count and hence a lower cost solution. However, efficient heat rejection challenges escalate as power and ambient temperature increase. For applications in ambient temperatures below freezing, the air-cooled approach has additional challenges associated with not overcooling the fuel cell stack. The focus of this project was freeze tolerance while maintaining all other stack and system requirements. Through this project, Plug Power advanced the state of the art in technology for air-cooled PEM fuel cell stacks and related GenDrive material handling application fuel cell systems. This was accomplished through a collaborative work plan to improve freeze tolerance and mitigate freeze-thaw effect failure modes within innovative material handling equipment fuel cell systems designed for use in freezer forklift applications. Freeze tolerance remains an area where additional research and understanding can help fuel cells to become commercially viable. This project evaluated both stack level and system level solutions to improve fuel cell stack freeze tolerance. At this time, the most cost effective solutions are at the system level. The freeze mitigation strategies developed over the course of this project could be used to drive fuel cell commercialization. The fuel cell system studied in this project was Plug Power's commercially available GenDrive platform providing battery replacement for equipment in the material handling industry. The fuel cell stacks were Ballard's commercially available FCvelocity 9SSL (9SSL) liquid-cooled PEM fuel cell stack and FCvelocity 1020ACS (Mk1020) air-cooled PEM fuel cell stack.

  18. FMC high power density electric drive technology

    SciTech Connect (OSTI)

    Shafer, G.A.

    1994-12-31

    FMC has developed a unique capability in energy-efficient, high-performance AC induction electric drive systems for electric and hybrid vehicles. These drives will not only be important to future military ground combat vehicles, but will also provide significant competitive advantages to industrial and commercial machinery and vehicles. The product line under development includes drive motors and associated power converters directed at three power/vehicle weight classes. These drive systems cover a broad spectrum of potential vehicle applications, ranging from light pickup trucks to full-size transit buses. The drive motors and power converters are described.

  19. Mechanical drive for blood pump

    DOE Patents [OSTI]

    Bifano, N.J.; Pouchot, W.D.

    1975-07-29

    This patent relates to a highly efficient blood pump to be used as a replacement for a ventricle of the human heart to restore people disabled by heart disease. The mechanical drive of the present invention is designed to operate in conjunction with a thermoelectric converter power source. The mechanical drive system essentially converts the output of a rotary power into pulsatile motion so that the power demand from the thermoelectric converter remains essentially constant while the blood pump output is pulsed. (auth)

  20. Viability of Small Wind Distributed Generation for Farmers Who Irrigate (Poster)

    SciTech Connect (OSTI)

    Meadows, B.; Forsyth, T.; Johnson, S.; Healow, D.

    2010-05-01

    About 14% of U.S. farms are irrigated, representing 55 million acres of irrigated land. Irrigation on these farms is a major energy user in the United States, accounting for one-third of water withdrawals and 137 billion gallons per day. More than half of the Irrigation systems use electric energy. Wind energy can be a good choice for meeting irrigation energy needs. Nine of the top 10 irrigation states (California, Texas, Idaho, Arkansas, Colorado, Nebraska, Arizona, Kansas, Washington, and Oregon) have good to excellent wind resources. Many rural areas have sufficient wind speeds to make wind an attractive alternative, and farms and ranches can often install a wind energy system without impacting their ability to plant crops and graze livestock. Additionally, the rising and uncertain future costs of diesel, natural gas, and even electricity increase the potential effectiveness for wind energy and its predictable and competitive cost. In general, wind-powered electric generation systems generate more energy in the winter months than in the summer months when most crops need the water. Therefore, those states that have a supportive net metering policy can dramatically impact the viability of an onsite wind turbine. This poster presentation highlights case studies that show favorable and unfavorable policies that impact the growth of small wind in this important sector and demonstrate how net metering policies affect the viability of distributed wind generation for farmers who irrigate.

  1. Vehicle Technologies Office: 2015 Electric Drive Technologies...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    automotive technologies under development. Research is focused on developing power electronics (PE), electric motor, and traction drive system (TDS) technologies that will ...

  2. DropBot: An open-source digital microfluidic control system with precise control of electrostatic driving force and instantaneous drop velocity measurement

    SciTech Connect (OSTI)

    Fobel, Ryan; Donnelly Centre for Cellular and Biomolecular Research, 160 College St., Toronto, Ontario M5S 3E1 ; Fobel, Christian; Wheeler, Aaron R.; Donnelly Centre for Cellular and Biomolecular Research, 160 College St., Toronto, Ontario M5S 3E1; Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario M5S 3H6

    2013-05-13

    We introduce DropBot: an open-source instrument for digital microfluidics (http://microfluidics.utoronto.ca/dropbot). DropBot features two key functionalities for digital microfluidics: (1) real-time monitoring of instantaneous drop velocity (which we propose is a proxy for resistive forces), and (2) application of constant electrostatic driving forces through compensation for amplifier-loading and device capacitance. We anticipate that this system will enhance insight into failure modes and lead to new strategies for improved device reliability, and will be useful for the growing number of users who are adopting digital microfluidics for automated, miniaturized laboratory operation.

  3. Turlock Irrigation District | Open Energy Information

    Open Energy Info (EERE)

    @TurlockID Facebook: https:www.facebook.compagesTurlock-Irrigation-District112344728820408 Outage Hotline: 209-883-8301 or (209) 892-4936 (from Patterson) Outage Map:...

  4. Irrigation, Navigation Flood Control and Recreation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Irrigation,-Navigation-Flood-Control-and-Recreation- Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand...

  5. Nevada Irrigation District | Open Energy Information

    Open Energy Info (EERE)

    search Name: Nevada Irrigation District Place: California Website: nidwater.com Outage Hotline: (530) 273-6185 References: EIA Form EIA-861 Final Data File for 2010 -...

  6. Consider Steam Turbine Drives for Rotating Equipment | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Steam Turbine Drives for Rotating Equipment Consider Steam Turbine Drives for Rotating Equipment This tip sheet outlines the benefits of steam turbine drives for rotating equipment as part of optimized steam systems. STEAM TIP SHEET #21 Consider Steam Turbine Drives for Rotating Equipment (January 2012) (398.66 KB) More Documents & Publications Improving Steam System Performance: A Sourcebook for Industry, Second Edition Adjustable Speed Drive Part-Load Efficiency Benchmark the Fuel Cost of

  7. Modified Streamflows 1990 Level of Irrigation : Columbia River and Coastal Basins, 1928-1989.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration; A.G. Crook Company

    1993-04-01

    The annual operation plans described in the following sections require detailed system regulation computer model studies. These system regulation studies are necessary to evaluate potential new projects and to develop operational rule curves for the existing system of projects. The objective is to provide a basis for evaluating alternative system regulation scenarios. This provides essential input for optimizing the management of existing projects and planning future projects for the most beneficial use of the water supply and resources in the entire region. Historical streamflows per se are inadequate for system regulation studies because the pattern of observed flow has continually changed with each successive stage of irrigation and e development. The problem, therefore, is to adjust for past operation of storage projects and to determine the necessary adjustments that should be made to recorded flows to reflect current stages of irrigation development. Historical flows which have been adjusted to a common level of irrigation development by correcting for the effects of diversion demand, return flow, and change-of-contents and evaporation in upstream reservoirs and lakes are referred to as modified flows. This report describes the development of irrigation depletion adjustments and modified flows for the 1990 level of development for the 61-year period 1928--1989. incremental depletion adjustments were computed in this report for each month of the 61-year period to adjust the effects of actual irrigation in each year up to that which would have been experienced with the irrigation as practiced in 1990.

  8. Drill drive mechanism

    DOE Patents [OSTI]

    Dressel, Michael O.

    1979-01-01

    A drill drive mechanism is especially adapted to provide both rotational drive and axial feed for a drill of substantial diameter such as may be used for drilling holes for roof bolts in mine shafts. The drill shaft is made with a helical pattern of scroll-like projections on its surface for removal of cuttings. The drill drive mechanism includes a plurality of sprockets carrying two chains of drive links which are arranged to interlock around the drill shaft with each drive link having depressions which mate with the scroll-like projections. As the chain links move upwardly or downwardly the surfaces of the depressions in the links mate with the scroll projections to move the shaft axially. Tangs on the drive links mate with notch surfaces between scroll projections to provide a means for rotating the shaft. Projections on the drive links mate together at the center to hold the drive links tightly around the drill shaft. The entire chain drive mechanism is rotated around the drill shaft axis by means of a hydraulic motor and gear drive to cause rotation of the drill shaft. This gear drive also connects with a differential gearset which is interconnected with a second gear. A second motor is connected to the spider shaft of the differential gearset to produce differential movement (speeds) at the output gears of the differential gearset. This differential in speed is utilized to drive said second gear at a speed different from the speed of said gear drive, this speed differential being utilized to drive said sprockets for axial movement of said drill shaft.

  9. Stirling Engines and Irrigation Pumping

    SciTech Connect (OSTI)

    West, C.D.

    1987-01-01

    This report was prepared in support of the Renewable Energy Applications and Training Project that is sponsored by the U.S. Agency for International Development for which ORNL provides technical assistance. It briefly outlines the performance that might be achievable from various kinds of Stirling-engine-driven irrigation pumps. Some emphasis is placed on the very simple liquid-piston engines that have been the subject of research in recent years and are suitable for manufacture in less well-developed countries. In addition to the results quoted here (possible limits on M4 and pumping head for different-size engines and various operating conditions), the method of calculation is described in sufficient detail for engineers to apply the techniques to other Stirling engine designs for comparison.

  10. Electric-drive tractability indicator integrated in hybrid electric vehicle tachometer

    DOE Patents [OSTI]

    Tamai, Goro; Zhou, Jing; Weslati, Feisel

    2014-09-02

    An indicator, system and method of indicating electric drive usability in a hybrid electric vehicle. A tachometer is used that includes a display having an all-electric drive portion and a hybrid drive portion. The all-electric drive portion and the hybrid drive portion share a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle. The indicated level of electric drive usability is derived from at least one of a percent battery discharge, a percent maximum torque provided by the electric drive, and a percent electric drive to hybrid drive operating cost for the hybrid electric vehicle.

  11. Electric Drive Status and Challenges

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Leaf * 75 mile electric range * 80 kW electric drive * electric drive cost:1,600 Tesla Model S * 250 mile electric range * 270 kW electric drive * electric drive ...

  12. Driving/Idling Resources

    Broader source: Energy.gov [DOE]

    While transportation efficiency policies are often implemented under local governments, national and state programs can play supportive roles in reducing vehicle miles traveled. Find driving/idling...

  13. Holiday Food Drive

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Community Programs Office (505) 665-4400 Email Get Expertise Helping feed Northern New Mexico families During the Laboratory's 2015 Annual Food Drive, employees and subcontract...

  14. National Drive Electric Week

    Office of Energy Efficiency and Renewable Energy (EERE)

    Celebrate National Drive Electric Week with ways to make your all-electric or plug-in hybrid cars even greener!

  15. Variable Frequency Drives

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Marketing Toolkit The Benefits of Variable Frequency Drives (VFDs) VFDs help adjust motor speeds to match loads and improve efficiency while conserving energy. The benefits...

  16. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, Jr., Charles A.

    1999-08-31

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

  17. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, C.A. Jr.

    1999-08-31

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes. 7 figs.

  18. DRIVE(tm) Mobile App | Open Energy Information

    Open Energy Info (EERE)

    handle all of the details related to sending incentives, provide real time status of offer accepts, and validate points earned. The DRIVE System includes the DRIVE App as a fun...

  19. Consider Steam Turbine Drives for Rotating Equipment

    SciTech Connect (OSTI)

    Not Available

    2006-01-01

    This revised ITP tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

  20. Google Drive for Work | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Google Drive for Work Google Drive for Work Computer.png Welcome to the U.S. Department of Energy Pilot Program, Google Drive for Work. Please read and sign the Terms of Use and Privacy Statement below. DISCLAIMER All data is owned by DOE and may be monitored, intercepted, recorded, read, copied, or captured in any manner and disclosed in any manner, by authorized personnel. THERE IS NO RIGHT OF PRIVACY IN THIS SYSTEM, and system personnel may give to law enforcement officials any potential

  1. A thermo-mechanical correlation with driving forces for hcp martensite and twin formations in the Fe–Mn–C system exhibiting multicomposition sets

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Nakano, Jinichiro

    2013-03-15

    Thermodynamic properties of the Fe-Mn-C system were investigated by using an analytical model constructed by a CALPHAD approach. Stacking fault energy (SFE) of the fcc structure with respect to the hcp phase was always constant at T0, independent of composition and temperature when the other related parameters were assumed to be constant. Experimental limits for the thermal hcp formation and the mechanical (deformation-induced) hcp formation were separated by the SFE at T0. The driving force for the fcc to hcp transition, defined as a dimensionless value –dGm/(RT), was determined in the presence of Fe-rich and Mn-rich composition sets in eachmore » phase. Carbon tended to partition to the Mn-rich phase rather than to the Fe-rich phase for the studied compositions. The obtained results revealed a thermo-mechanical correlation with empirical yield strength, maximum true stress and maximum true strain. The proportionality between thermodynamics and mechanical properties is discussed.« less

  2. A thermo-mechanical correlation with driving forces for hcp martensite and twin formations in the FeMnC system exhibiting multicomposition sets

    SciTech Connect (OSTI)

    Nakano, Jinichiro

    2013-03-15

    Thermodynamic properties of the Fe-Mn-C system were investigated by using an analytical model constructed by a CALPHAD approach. Stacking fault energy (SFE) of the fcc structure with respect to the hcp phase was always constant at T0, independent of composition and temperature when the other related parameters were assumed to be constant. Experimental limits for the thermal hcp formation and the mechanical (deformation-induced) hcp formation were separated by the SFE at T0. The driving force for the fcc to hcp transition, defined as a dimensionless value dGm/(RT), was determined in the presence of Fe-rich and Mn-rich composition sets in each phase. Carbon tended to partition to the Mn-rich phase rather than to the Fe-rich phase for the studied compositions. The obtained results revealed a thermo-mechanical correlation with empirical yield strength, maximum true stress and maximum true strain. The proportionality between thermodynamics and mechanical properties is discussed.

  3. Control rod drive

    DOE Patents [OSTI]

    Hawke, Basil C.

    1986-01-01

    A control rod drive uses gravitational forces to insert one or more control rods upwardly into a reactor core from beneath the reactor core under emergency conditions. The preferred control rod drive includes a vertically movable weight and a mechanism operatively associating the weight with the control rod so that downward movement of the weight is translated into upward movement of the control rod. The preferred control rod drive further includes an electric motor for driving the control rods under normal conditions, an electrically actuated clutch which automatically disengages the motor during a power failure and a decelerator for bringing the control rod to a controlled stop when it is inserted under emergency conditions into a reactor core.

  4. Frequency modulation drive for a piezoelectric motor

    DOE Patents [OSTI]

    Mittas, Anthony

    2001-01-01

    A piezoelectric motor has peak performance at a specific frequency f.sub.1 that may vary over a range of frequencies. A drive system is disclosed for operating such a motor at peak performance without feedback. The drive system consists of the motor and an ac source connected to power the motor, the ac source repeatedly generating a frequency over a range from f.sub.1 -.DELTA.x to f.sub.1 +.DELTA.y.

  5. US DRIVE Driving Research and Innovation for Vehicle Efficiency...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    US DRIVE Fuel Pathway Integration Technical Team Roadmap Hydrogen Program Goal-Setting Methodologies Report to Congress US DRIVE Hydrogen Production Technical Team Roadmap

  6. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2006-10-10

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  7. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2007-02-27

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  8. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-07-11

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  9. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett Lee; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-09-19

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  10. Holiday Gift Drive

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Gift Drive Holiday Gift Drive Every year, Laboratory employees help fulfill the holiday wishes of children and seniors in our communities. In 2015, our employees donated more than 1,200 gifts to 23 nonprofit organizations to help Northern New Mexico children, senior citizens, and families have a brighter holiday season. May 7, 2015 Every holiday season, employees of Los Alamos National Laboratory donate and distribute gifts to families in need throughout Northern New Mexico. Contacts Annual Food

  11. CONTROL ROD DRIVE

    DOE Patents [OSTI]

    Chapellier, R.A.

    1960-05-24

    BS>A drive mechanism was invented for the control rod of a nuclear reactor. Power is provided by an electric motor and an outside source of fluid pressure is utilized in conjunction with the fluid pressure within the reactor to balance the loadings on the motor. The force exerted on the drive mechanism in the direction of scramming the rod is derived from the reactor fluid pressure so that failure of the outside pressure source will cause prompt scramming of the rod.

  12. Vehicle Technologies Office: 2014 Electric Drive Technologies Annual

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Progress Report | Department of Energy Electric Drive Technologies Annual Progress Report Vehicle Technologies Office: 2014 Electric Drive Technologies Annual Progress Report The Electric Drive Technologies research and development (R&D) subprogram within the DOE Vehicle Technologies Office (VTO) provides support and guidance for many cutting-edge automotive technologies under development. Research is focused on developing power electronics (PE), electric motor, and traction drive system

  13. Control rod drive for reactor shutdown

    DOE Patents [OSTI]

    McKeehan, Ernest R.; Shawver, Bruce M.; Schiro, Donald J.; Taft, William E.

    1976-01-20

    A means for rapidly shutting down or scramming a nuclear reactor, such as a liquid metal-cooled fast breeder reactor, and serves as a backup to the primary shutdown system. The control rod drive consists basically of an in-core assembly, a drive shaft and seal assembly, and a control drive mechanism. The control rod is driven into the core region of the reactor by gravity and hydraulic pressure forces supplied by the reactor coolant, thus assuring that common mode failures will not interfere with or prohibit scramming the reactor when necessary.

  14. U.S. DRIVE

    SciTech Connect (OSTI)

    2012-03-16

    U.S. DRIVE, which stands for United States Driving Research and Innovation for Vehicle efficiency and Energy sustainability, is an expanded government-industry partnership among the U.S. Department of Energy; USCAR, representing Chrysler Group LLC, Ford Motor Company and General Motors; Tesla Motors; five energy companies – BP America, Chevron Corporation, ConocoPhillips, ExxonMobil Corporation, and Shell Oil Products US; two utilities – Southern California Edison and Michigan-based DTE Energy; and the Electric Power Research Institute (EPRI). The U.S. DRIVE mission is to accelerate the development of pre-competitive and innovative technologies to enable a full range of affordable and clean advanced light-duty vehicles, as well as related energy infrastructure.

  15. Ceramic vane drive joint

    DOE Patents [OSTI]

    Smale, Charles H.

    1981-01-01

    A variable geometry gas turbine has an array of ceramic composition vanes positioned by an actuating ring coupled through a plurality of circumferentially spaced turbine vane levers to the outer end of a metallic vane drive shaft at each of the ceramic vanes. Each of the ceramic vanes has an end slot of bow tie configuration including flared end segments and a center slot therebetween. Each of the vane drive shafts has a cross head with ends thereof spaced with respect to the sides of the end slot to define clearance for free expansion of the cross head with respect to the vane and the cross head being configured to uniformly distribute drive loads across bearing surfaces of the vane slot.

  16. CONTROL ROD DRIVE

    DOE Patents [OSTI]

    Chapellier, R.A.; Rogers, I.

    1961-06-27

    Accurate and controlled drive for the control rod is from an electric motor. A hydraulic arrangement is provided to balance a piston against which a control rod is urged by the application of fluid pressure. The electric motor drive of the control rod for normal operation is made through the aforementioned piston. In the event scramming is required, the fluid pressure urging the control rod against the piston is relieved and an opposite fluid pressure is applied. The lack of mechanical connection between the electric motor and control rod facilitates the scramming operation.

  17. Collaboration drives achievement in protein structure research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Collaboration drives achievement in protein structure research Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Collaboration drives achievement in protein structure research By tracking down how bacterial defense systems work, the scientists can potentially fight infectious diseases and genetic disorders November 1, 2014 Thomas Terwilliger Thomas Terwilliger Contact Linda Anderman Email When a recent print issue of

  18. Forest Irrigation Of Tritiated Water: A Proven Tritiated Water Management Tool

    SciTech Connect (OSTI)

    Vangelas, Karen; Blount, Gerald; Kmetz, Thomas; Prater, Phil

    2012-11-08

    Tritium releases from the Old Radioactive Waste Burial Ground (ORWBG) at the SRS in South Carolina has impacted groundwater and surface water. Tritiated groundwater plumes discharge into Fourmile Branch which is a small tributary of the Savannah River, a regional water resource. Taking advantage of the groundwater flow paths and the local topography a water collection and irrigation system was constructed and has been used at the SRS for over a decade to reduce these tritiated water releases to Fourmile Branch. The tritiated water is transferred to the atmosphere by evaporation from the pond surface, and after irrigation, wetted surface evaporation and evapotranspiration through the forest vegetation. Over the last decade SRS has irrigated over 120,000,000 gallons of tritiated water, which diverted over 6000 curies away from Fourmile Branch and the Savannah River. The system has been effective in reducing the flux of tritiated groundwater by approximately 70%. Mass balance studies of tritium in the forest soils before operations and over the last decade indicate that approximately 90% of the tritiated water that is irrigated is transferred to the atmosphere. Dose studies indicate that exposure to site workers and offsite maximally exposed individual is very low, approximately 6 mrem/year and 0.004 mrem/year, respectively. To consistently meet the flux reduction goal of tritium into Fourmile Branch optimization activities are proposed. These efforts will increase irrigation capacity and area. An additional 17 acres are proposed for an expansion of the area to be irrigated and a planting of approximately 40 acres of pine forest plantations is underway to expand irrigation capacity. Co-mingled with the tritiated groundwater are low concentrations of chlorinated volatile organic compounds (cVOCs), and 1,4-dioxane. Research studies and SRS field data indicate the forest irrigation system may have an added benefit of reducing the mass of these co-contaminants via

  19. Vehicle Technologies Office: Materials for Hybrid and Electric Drive

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems | Department of Energy Hybrid and Electric Drive Systems Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems The Vehicle Technologies Office (VTO) is working to lower the cost and increase the convenience of electric drive vehicles, which include hybrid and plug-in electric vehicles. These vehicles use advanced power electronics and electric motors that face barriers because their subcomponents have specific material limitations. Novel propulsion materials

  20. AmeriFlux US-Ne2 Mead - irrigated maize-soybean rotation site

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Suyker, Andy [University of Nebraska - Lincoln

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ne2 Mead - irrigated maize-soybean rotation site. Site Description - The study site is one of three fields (all located within 1.6 km of each other) at the University of Nebraska Agricultural Research and Development Center near Mead, Nebraska. This site is irrigated with a center pivot system. Prior to the initiation of the study, the irrigated site had a 10-yr history of maize-soybean rotation under no-till. A tillage operation (disking) was done just prior to the 2001 planting to homogenize the top 0.1 m of soil, incorporate P and K fertilizers, as well as previously accumulated surface residues. Since this tillage operation, the site has been under no-till management.

  1. Direct Drive Wave Energy Buoy | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Direct Drive Wave Energy Buoy 15direcolumbiapowerrhinefrank.ppt (1.58 MB) More Documents & Publications Wave Tank WEC Array Analysis Ocean Power Technologies (TRL 7 8 System) - ...

  2. The Drive for Energy Diversity and Sustainability: The Impact...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Sustainability: The Impact on Transportation Fuels and Propulsion System Portfolios The Drive for Energy Diversity and Sustainability: The Impact on Transportation Fuels and...

  3. EV Everywhere EV Everywhere Grand Challenge - Electric Drive...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    first in the world to produce plug-in electric vehicles (PEVs) that are as affordable and ... BREAKOUT SESSION 1: (three groups) * Traction Drive System * Power Electronics and ...

  4. Universal power transistor base drive control unit

    DOE Patents [OSTI]

    Gale, Allan R.; Gritter, David J.

    1988-01-01

    A saturation condition regulator system for a power transistor which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition.

  5. Universal power transistor base drive control unit

    DOE Patents [OSTI]

    Gale, A.R.; Gritter, D.J.

    1988-06-07

    A saturation condition regulator system for a power transistor is disclosed which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition. 2 figs.

  6. Deep subsurface drip irrigation using coal-bed sodic water: Part I. Water and solute movement

    SciTech Connect (OSTI)

    Bern, Carleton R.; Breit, George N.; Healy, Richard W.; Zupancic, John W.; Hammack, Richard

    2013-02-01

    Water co-produced with coal-bed methane (CBM) in the semi-arid Powder River Basin of Wyoming and Montana commonly has relatively low salinity and high sodium adsorption ratios that can degrade soil permeability where used for irrigation. Nevertheless, a desire to derive beneficial use from the water and a need to dispose of large volumes of it have motivated the design of a deep subsurface drip irrigation (SDI) system capable of utilizing that water. Drip tubing is buried 92 cm deep and irrigates at a relatively constant rate year-round, while evapotranspiration by the alfalfa and grass crops grown is seasonal. We use field data from two sites and computer simulations of unsaturated flow to understand water and solute movements in the SDI fields. Combined irrigation and precipitation exceed potential evapotranspiration by 300480 mm annually. Initially, excess water contributes to increased storage in the unsaturated zone, and then drainage causes cyclical rises in the water table beneath the fields. Native chloride and nitrate below 200 cm depth are leached by the drainage. Some CBM water moves upward from the drip tubing, drawn by drier conditions above. Chloride from CBM water accumulates there as root uptake removes the water. Year over year accumulations indicated by computer simulations illustrate that infiltration of precipitation water from the surface only partially leaches such accumulations away. Field data show that 7% and 27% of added chloride has accumulated above the drip tubing in an alfalfa and grass field, respectively, following 6 years of irrigation. Maximum chloride concentrations in the alfalfa field are around 45 cm depth but reach the surface in parts of the grass field, illustrating differences driven by crop physiology. Deep SDI offers a means of utilizing marginal quality irrigation waters and managing the accumulation of their associated solutes in the crop rooting zone.

  7. Vehicle Technologies Office: US DRIVE Materials Technical Team Roadmap |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy US DRIVE Materials Technical Team Roadmap Vehicle Technologies Office: US DRIVE Materials Technical Team Roadmap The Materials Technical Team (MTT) of the U.S. DRIVE Partnership focuses primarily on reducing the mass of structural systems such as the body and chassis in light-duty vehicles (including passenger cars and light trucks). Mass reduction also enables improved vehicle efficiency regardless of the vehicle size or propulsion system employed. This roadmap lays out

  8. Blood Drive | The Ames Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Blood Drive Date: 06082016 - 10:00 Location: 205 TASF Event Type: Laboratory Unite American Red Cross Blood Drive Please sign up in 311 TASF to donate and volunteer Or make an ...

  9. Drive alignment pays maintenance dividends

    SciTech Connect (OSTI)

    Fedder, R.

    2008-12-15

    Proper alignment of the motor and gear drive on conveying and processing equipment will result in longer bearing and coupling life, along with lower maintenance costs. Selecting an alignment free drive package instead of a traditional foot mounted drive and motor is a major advancement toward these goals. 4 photos.

  10. Drive Diagnostic Filter Wheel Control

    Energy Science and Technology Software Center (OSTI)

    2007-07-17

    DrD Filter Wheel Control is National Instrument's Labview software that drives a Drive Diagnostic filter wheel. The software can drive the filter wheel between each end limit, detect the positive and negative limit and each home position and post the stepper motot values to an Excel spreadsheet. The software can also be used to cycle the assembly between the end limits.

  11. Base drive circuit

    DOE Patents [OSTI]

    Lange, A.C.

    1995-04-04

    An improved base drive circuit having a level shifter for providing bistable input signals to a pair of non-linear delays. The non-linear delays provide gate control to a corresponding pair of field effect transistors through a corresponding pair of buffer components. The non-linear delays provide delayed turn-on for each of the field effect transistors while an associated pair of transistors shunt the non-linear delays during turn-off of the associated field effect transistor. 2 figures.

  12. Base drive circuit

    DOE Patents [OSTI]

    Lange, Arnold C.

    1995-01-01

    An improved base drive circuit (10) having a level shifter (24) for providing bistable input signals to a pair of non-linear delays (30, 32). The non-linear delays (30, 32) provide gate control to a corresponding pair of field effect transistors (100, 106) through a corresponding pair of buffer components (88, 94). The non-linear delays (30, 32) provide delayed turn-on for each of the field effect transistors (100, 106) while an associated pair of transistors (72, 80) shunt the non-linear delays (30, 32) during turn-off of the associated field effect transistor (100, 106).

  13. Stop/Start: Driving

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    highlighted Braking button subbanner graphic: gray bar PULLING OUT & DRIVING PART 1 The gasoline engine does not run when the vehicle is at rest. When pulling out, the electric starter/generator uses electricity from the battery to instantly start the gasoline engine---the sole source of propulsion for the vehicle. Go to next… stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric starter/generator visible. The car is stopped at an intersection.

  14. Electrical motor/generator drive apparatus and method

    DOE Patents [OSTI]

    Su, Gui Jia

    2013-02-12

    The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and thus the volume and cost of a capacitor. The drive methodology is based on a segmented drive system that does not add switches or passive components but involves reconfiguring inverter switches and motor stator winding connections in a way that allows the formation of multiple, independent drive units and the use of simple alternated switching and optimized Pulse Width Modulation (PWM) schemes to eliminate or significantly reduce the capacitor ripple current.

  15. Modesto Irrigation District- Commercial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District’s Commercial Power Saver Rebate Program offers incentives to commercial, industrial, and agricultural customers for the purchase and installation of qualifying energy...

  16. Modesto Irrigation District- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District’s Home Rebate Program offers residential customers cash rebates for the purchase and installation of qualifying energy efficient products installed in existing homes....

  17. Modesto Irrigation District- New Home Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District's MPower New Home Program provides incentives to builders and homeowners for designing and building energy-efficient homes. Eligible homes must meet the guidelines for...

  18. SIC ENABLED HIGH-FREQUENCY MEDIUM VOLTAGE DRIVE FOR HIGH-SPEED...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A medium voltage drive system using SiC semiconductors and a high-speed motor to reduce ... MV high frequency drive, (ii) a high-speed motor, and (iii) advanced insulation systems. ...

  19. Rotary drive mechanism

    SciTech Connect (OSTI)

    Kenderdine, E.W.

    1991-10-08

    This patent describes a rotary drive mechanism which includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de- energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti- overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

  20. Rotary drive mechanism

    DOE Patents [OSTI]

    Kenderdine, Eugene W. (Albuquerque, NM)

    1991-01-01

    A rotary drive mechanism includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de-energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti-overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

  1. A Statistical Characterization of School Bus Drive Cycles Collected...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Timoney, D., "Examination of Low-cost Systems for the Determination of Kinematic ... of Drive Cycles on the Performance of a PEM Fuel Cell System for Automotive Applications," SAE ...

  2. Stratified random sampling plan for an irrigation customer telephone survey

    SciTech Connect (OSTI)

    Johnston, J.W.; Davis, L.J.

    1986-05-01

    This report describes the procedures used to design and select a sample for a telephone survey of individuals who use electricity in irrigating agricultural cropland in the Pacific Northwest. The survey is intended to gather information on the irrigated agricultural sector that will be useful for conservation assessment, load forecasting, rate design, and other regional power planning activities.

  3. Designing Effective Incentives to Drive Residential Retrofit...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Incentives to Drive Residential Retrofit Program Participation Designing Effective Incentives to Drive Residential Retrofit Program Participation This webinar covered retrofit ...

  4. Estimates of Savings Achievable from Irrigation Controller

    SciTech Connect (OSTI)

    Williams, Alison; Fuchs, Heidi; Whitehead, Camilla Dunham

    2014-03-28

    This paper performs a literature review and meta-analysis of water savings from several types of advanced irrigation controllers: rain sensors (RS), weather-based irrigation controllers (WBIC), and soil moisture sensors (SMS).The purpose of this work is to derive average water savings per controller type, based to the extent possible on all available data. After a preliminary data scrubbing, we utilized a series of analytical filters to develop our best estimate of average savings. We applied filters to remove data that might bias the sample such as data self-reported by manufacturers, data resulting from studies focusing on high-water users, or data presented in a non-comparable format such as based on total household water use instead of outdoor water use. Because the resulting number of studies was too small to be statistically significant when broken down by controller type, this paper represents a survey and synthesis of available data rather than a definitive statement regarding whether the estimated water savings are representative.

  5. Sequenced drive for rotary valves

    DOE Patents [OSTI]

    Mittell, Larry C.

    1981-01-01

    A sequenced drive for rotary valves which provides the benefits of applying rotary and linear motions to the movable sealing element of the valve. The sequenced drive provides a close approximation of linear motion while engaging or disengaging the movable element with the seat minimizing wear and damage due to scrubbing action. The rotary motion of the drive swings the movable element out of the flowpath thus eliminating obstruction to flow through the valve.

  6. School supply drive winding down

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    School Supply Drive Winding Down Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit School supply drive winding down The drive is collecting materials for schools throughout Northern New Mexico and will be distributed by the Lab and Self Help, Inc. August 1, 2012 dummy image Read our archives Contacts Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email Notebooks,

  7. Back to School Drive 2016

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Back to School Drive 2016 Back to School Drive 2016 - now through July 20 Each year, Laboratory employees donate shoes, school supplies and backpacks for Northern New Mexico students as they start the new school year. September 16, 2013 Back pack with school supplies and shoes In 2015, more than 800 elementary and middle-school students received backpacks filled with school supplies. Additionally, $4,000 was given to purchase school supplies from Dollars 4 Schools. Contact Giving Drives Janelle

  8. Distribution Drive | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name: Distribution Drive Place: Dallas, Texas Zip: 75205 Product: Biodiesel fuel distributor. Coordinates: 32.778155, -96.795404 Show Map Loading map......

  9. Test Drive: Honda FCX Clarity

    Broader source: Energy.gov [DOE]

    A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C.

  10. Solar energy operated irrigation surge valve

    SciTech Connect (OSTI)

    Spain, R. L.

    1985-08-20

    A valve body is provided having axially spaced annular valve seats defining fluid outlets for the body. The body includes an inlet opening into the interior thereof between the seats and a disc valve is supported within the body for axial shifting between the seats. A drive mechanism for the valve disc is drivingly connected thereto and is operative to slowly shift the valve disc from one seat toward engagement with the other seat. The drive mechanism includes a reversible electric motor, a timer, a storage battery and a solar panel for recharging the storage battery. The timer alternately operates the motor in opposite directions whereby the valve disc is shifted back and forth between seated engagement with the axially spaced valve seats.

  11. Electric drive mechanism for vehicles

    SciTech Connect (OSTI)

    Bader, C.

    1983-06-21

    An electric drive mechanism is disclosed for vehicles, especially buses with overhead trolley routes, which routes are provided with relatively short interruptions in the overhead trolley. The drive mechanism includes a flywheel two externally excited electric motors which are adapted to be switched over from prime mover operation to generator operation, and which motors are effective as a ward-leonard drive during flywheel operation. The first electric motor is constructed for half of a maximum drive power and the second electric motor is likewise constructed for half or for square root 2/2 times the maximum drive power. Both electric motors are connected electrically in parallel during operation from the main electrical supply. The first and second motors are electrically connected in parallel during operation of the vehicle from the main electrical supply when a change-speed transmission is provided for connecting a drive shaft of one of the motors with driven vehicle wheels. A planetary gear transmission and a further transmission are provided for mechanically connecting the drive shaft of one of the motors with the second motor and with the flywheel.

  12. Magnetic compression laser driving circuit

    DOE Patents [OSTI]

    Ball, Don G.; Birx, Dan; Cook, Edward G.

    1993-01-01

    A magnetic compression laser driving circuit is disclosed. The magnetic compression laser driving circuit compresses voltage pulses in the range of 1.5 microseconds at 20 Kilovolts of amplitude to pulses in the range of 40 nanoseconds and 60 Kilovolts of amplitude. The magnetic compression laser driving circuit includes a multi-stage magnetic switch where the last stage includes a switch having at least two turns which has larger saturated inductance with less core material so that the efficiency of the circuit and hence the laser is increased.

  13. Magnetic compression laser driving circuit

    DOE Patents [OSTI]

    Ball, D.G.; Birx, D.; Cook, E.G.

    1993-01-05

    A magnetic compression laser driving circuit is disclosed. The magnetic compression laser driving circuit compresses voltage pulses in the range of 1.5 microseconds at 20 kilovolts of amplitude to pulses in the range of 40 nanoseconds and 60 kilovolts of amplitude. The magnetic compression laser driving circuit includes a multi-stage magnetic switch where the last stage includes a switch having at least two turns which has larger saturated inductance with less core material so that the efficiency of the circuit and hence the laser is increased.

  14. LNG: new driving force

    SciTech Connect (OSTI)

    Adkins, R.E.

    1981-11-01

    Spurred by recent legislation promoting the use of methane as a motor fuel, Beech Aircraft is gearing up for market production of a complete vehicular conversion kit and ground support equipment for a liquefied-methane fuel system that is suitable for the use of conventional LNG or methane collected from coalbeds, sewage plants, or landfills and liquefied on site. As demonstrated in field tests of prototype fuel systems, liquefied methane stores conveniently and is safe in motor vehicles. Compared with compressed methane, the liquefied form provides more horsepower and longer mileage between fuelings. Fully fueled, the Beech system weighs less than a gasoline or diesel tank of the same size. The system features electronic-capacitance gaging for direct dashboard quantity reading, a standby time of 14 days (from filling time until the time it reaches the maximum allowable vapor pressure of 60 psi), and the choice of vapor or liquid withdrawal.

  15. MEDIUM VOLTAGE INTEGRATED DRIVE AND MOTOR

    Broader source: Energy.gov [DOE]

    Calnetix Technologies – Cerritos, CA This project will focus on integrating a high voltage SiC device with advanced high-speed machine technology, medium voltage stators, high efficiency magnetic bearings and sensor high frequency drive technology that can work directly with high voltages, switch at high frequencies for low machine losses, and do so very efficiently. The new medium voltage motors are expected to achieve up to eight times the power density of similar traditional systems. Fact sheet coming soon.

  16. Collaboration drives achievement in protein structure research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Protein structure research Collaboration drives achievement in protein structure research By tracking down how bacterial defense systems work, the scientists can potentially fight infectious diseases and genetic disorders. September 15, 2014 Thomas Terwilliger Thomas Terwilliger Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "It is tremendously exciting working with researchers around the world, helping them apply the software and algorithms that we have developed to

  17. Quasi-spherical direct drive fusion.

    SciTech Connect (OSTI)

    VanDevender, J. Pace; Abbott, Lucas M.; Langston, William L.; McDaniel, Dillon Heirman; Nash, Thomas J.; Roderick, Norman Frederick; Silva, M.

    2007-01-01

    The authors present designs of quasi-spherical direction drive z-pinch loads for machines such as ZR at 28 MA load current with a 150 ns implosion time (QSDDI). A double shell system for ZR has produced a 2D simulated yield of 12 MJ, but the drive for this system on ZR has essentially no margin. A double shell system for a 56 MA driver at 150 ns implosion has produced a simulated yield of 130 MJ with considerable margin in attaining the necessary temperature and density-radius product for ignition. They also represent designs for a magnetically insulated current amplifier, (MICA), that modify the attainable ZR load current to 36 MA with a 28 ns rise time. The faster pulse provided by a MICA makes it possible to drive quasi-spherical single shell implosions (QSDD2). They present results from 1D LASNEX and 2D MACH2 simulations of promising low-adiabat cryogenic QSDD2 capsules and 1D LASNEX results of high-adiabat cryogenic QSDD2 capsules.

  18. Upgrading coal plant damper drives

    SciTech Connect (OSTI)

    Hood, N.R.; Simmons, K.

    2009-11-15

    The replacement of damper drives on two coal-fired units at the James H. Miller Jr. electric generating plant by Intelligent Contrac electric rotary actuators is discussed. 2 figs.

  19. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, Allen R.

    1998-01-01

    A positive-drive field actuator motor including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately.

  20. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, A.R.

    1998-03-10

    A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

  1. ARM - SGP Rural Driving Hazards

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Rural Driving Hazards SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Summer Training SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Rural Driving Hazards The rural location of the Southern Great Plains (SGP) site facilities requires that visitors travel on

  2. Low backlash direct drive actuator

    DOE Patents [OSTI]

    Kuklo, Thomas C. (Oakland, CA)

    1994-01-01

    A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw.

  3. Low backlash direct drive actuator

    DOE Patents [OSTI]

    Kuklo, T.C.

    1994-10-25

    A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw. 10 figs.

  4. Driving Green com | Open Energy Information

    Open Energy Info (EERE)

    Driving Green com Jump to: navigation, search Name: Driving Green.com Place: Melbourne, Florida Zip: 32904 Sector: Vehicles Product: Driving green.com is a website that allows...

  5. April Blood Drive Announcement | Jefferson Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    April Blood Drive Announcement April Blood Drive Announcement The next American Red Cross Blood Drive will take place Tuesday, April 12th from 10 a.m.-4 p.m. in CEBAF Center, Room ...

  6. Potential for Photovoltaic Solar Installation in Non-Irrigated Corners of Center Pivot Irrigation Fields in the State of Colorado

    SciTech Connect (OSTI)

    Roberts, B.

    2011-07-01

    The State of Colorado expressed an interest in assessing the potential for photovoltaic (PV) solar installations on non-irrigated corners of center-pivot irrigation (CPI) fields throughout the state. Using aerial imagery and irrigated land data available from the Colorado Water Conservation Board, an assessment of potentially suitable sites was produced. Productivity estimates were calculated from that assessment. The total area of non-irrigated corners of CPI fields in Colorado was estimated to be 314,674 acres, which could yield 223,418 acres of installed PV panels assuming 71% coverage in triangular plots. The total potential annual electricity production for the state was estimated to be 56,821 gigawatt hours (GWH), with an average of 1.3 GWH per available plot.

  7. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January ...

  8. Marketing & Driving Demand: Social Media Tools & Strategies ...

    Office of Environmental Management (EM)

    Marketing & Driving Demand: Social Media Tools & Strategies - January 16, 2011 (Text Version) Marketing & Driving Demand: Social Media Tools & Strategies - January 16, 2011 (Text...

  9. Cone Drive Operations Inc | Open Energy Information

    Open Energy Info (EERE)

    enveloping worm gear technology. The company supplies azimuth and elevation drives for solar tracking applications. References: Cone Drive Operations Inc1 This article is a...

  10. Driving Accountability for Program Performance Using Measured...

    Energy Savers [EERE]

    Driving Accountability for Program Performance Using Measured Energy Savings (201) Better Buildings Residential Network Peer Exchange Call Series: Driving Accountability for ...

  11. AmeriFlux US-Ne1 Mead - irrigated continuous maize site

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Suyker, Andy [University of Nebraska - Lincoln

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ne1 Mead - irrigated continuous maize site. Site Description - The study site is one of three fields (all located within 1.6 km of each other) at the University of Nebraska Agricultural Research and Development Center near Mead, Nebraska. This site is irrigated with a center pivot system. Prior to the initiation of the study, the irrigated site had a 10-yr history of maize-soybean rotation under no-till. A tillage operation (disking) was done just prior to the 2001 planting to homogenize the top 0.1 m of soil, incorporate P and K fertilizers, as well as previously accumulated surface residues. Since the tillage operation, the site has been under no-till management until the harvest of 2005. Following harvest, a conservation-plow tillage operation was initiated where a small amount of N fertilizer is sprayed on the residue immediately prior to the plow operation. Approximately 1/3 of the crop residue is left on the surface. The post-harvest conservation-plow operation continues as the current practice.

  12. Vehicle Technologies Office Merit Review 2016: Electric Drive Inverter R&D

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    | Department of Energy Electric Drive Inverter R&D Vehicle Technologies Office Merit Review 2016: Electric Drive Inverter R&D Presentation given by Oak Ridge National Laboratory (ORNL) at the 2016 DOE Vehicle Technologies Office and Hydrogen and Fuel Cells Program Annual Merit Review and Peer Evaluation Meeting about Electric Drive Systems edt053_chinthavali_2016_o_web.pdf (1.97 MB) More Documents & Publications Vehicle Technologies Office Merit Review 2015: Electric Drive

  13. Base drive circuit for a four-terminal power Darlington

    DOE Patents [OSTI]

    Lee, Fred C.; Carter, Roy A.

    1983-01-01

    A high power switching circuit which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.

  14. MULTIPLE DIFFERENTIAL ROTARY MECHANICAL DRIVE

    DOE Patents [OSTI]

    Smits, R.G.

    1964-01-28

    This patent relates to a mechanism suitable for such applications as driving two spaced-apart spools which carry a roll film strip under conditions where the film movement must be rapidly started, stopped, and reversed while maintaining a constant tension on the film. The basic drive is provided by a variable speed, reversible rnotor coupled to both spools through a first differential mechanism and driving both spools in the same direction. A second motor, providing a constant torque, is connected to the two spools through a second differential mechanism and is coupled to impart torque to one spool in a first direction anid to the other spool in the reverse direction thus applying a constant tension to the film passing over the two spools irrespective of the speed or direction of rotation thereof. (AEC)

  15. Anomalous-viscosity current drive

    DOE Patents [OSTI]

    Stix, T.H.; Ono, M.

    1986-04-25

    The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

  16. Hydromechanical transmission with hydrodynamic drive

    DOE Patents [OSTI]

    Orshansky, Jr., deceased, Elias; Weseloh, William E.

    1979-01-01

    This transmission has a first planetary gear assembly having first input means connected to an input shaft, first output means, and first reaction means, and a second planetary gear assembly having second input means connected to the first input means, second output means, and second reaction means connected directly to the first reaction means by a reaction shaft. First clutch means, when engaged, connect the first output means to an output shaft in a high driving range. A hydrodynamic drive is used; for example, a torque converter, which may or may not have a stationary case, has a pump connected to the second output means, a stator grounded by an overrunning clutch to the case, and a turbine connected to an output member, and may be used in a starting phase. Alternatively, a fluid coupling or other type of hydrodynamic drive may be used. Second clutch means, when engaged, for connecting the output member to the output shaft in a low driving range. A variable-displacement hydraulic unit is mechanically connected to the input shaft, and a fixed-displacement hydraulic unit is mechanically connected to the reaction shaft. The hydraulic units are hydraulically connected together so that when one operates as a pump the other acts as a motor, and vice versa. Both clutch means are connected to the output shaft through a forward-reverse shift arrangement. It is possible to lock out the torque converter after the starting phase is over.

  17. Direct Drive Systems DDS | Open Energy Information

    Open Energy Info (EERE)

    high speed, permanent magnet (PM), high-power motors, generators and power electronics. Coordinates: 33.868545, -118.063704 Show Map Loading map......

  18. FY2014 Electric Drive Technologies Annual Progress Report

    SciTech Connect (OSTI)

    2014-12-01

    The Electric Drive Technologies research and development (R&D) subprogram within the DOE Vehicle Technologies Office (VTO) provides support and guidance for many cutting-edge automotive technologies under development. Research is focused on developing power electronics (PE), electric motor, and traction drive system (TDS) technologies that will reduce system cost and improve their efficiency in transforming battery energy to useful work. The R&D is also aimed at better understanding and improving how various components of tomorrow’s automobiles will function as a unified system to improve fuel efficiency.

  19. Climate Mitigation Policy Implications for Global Irrigation Water Demand

    SciTech Connect (OSTI)

    Chaturvedi, Vaibhav; Hejazi, Mohamad I.; Edmonds, James A.; Clarke, Leon E.; Kyle, G. Page; Davies, Evan; Wise, Marshall A.

    2013-08-22

    Energy, water and land are scarce resources, critical to humans. Developments in each affect the availability and cost of the others, and consequently human prosperity. Measures to limit greenhouse gas concentrations will inevitably exact dramatic changes on energy and land systems and in turn alter the character, magnitude and geographic distribution of human claims on water resources. We employ the Global Change Assessment Model (GCAM), an integrated assessment model to explore the interactions of energy, land and water systems in the context of alternative policies to limit climate change to three alternative levels: 2.5 Wm-2 (445 ppm CO2-e), 3.5 Wm-2 (535 ppm CO2-e) and 4.5 Wm-2 (645 ppm CO2-e). We explore the effects of alternative land-use emissions mitigation policy options—one which values terrestrial carbon emissions equally with fossil fuel and industrial emissions, and an alternative which places no penalty on land-use change emissions. We find that increasing populations and economic growth could be anticipated to lead to increased demand for water for agricultural systems (+200%), even in the absence of climate change. In general policies to mitigate climate change will increase agricultural demands for water, regardless of whether or not terrestrial carbon is valued or not. Burgeoning demands for water are driven by the demand for bioenergy in response to emissions mitigation policies. We also find that the policy matters. Increases in the demand for water when terrestrial carbon emissions go un-prices are vastly larger than when terrestrial system carbon emissions are prices at the same rate as fossil fuel and industrial emissions. Our estimates for increased water demands when terrestrial carbon systems go un-priced are larger than earlier studies. We find that the deployment of improved irrigation delivery systems could mitigate some of the increase in water demands, but cannot reverse the increases in water demands when terrestrial carbon

  20. Is it Cost-Effective to Replace Old Eddy-Current Drives? | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Is it Cost-Effective to Replace Old Eddy-Current Drives? Is it Cost-Effective to Replace Old Eddy-Current Drives? New pulse-width-modulated (PWM) adjustable speed drives (ASDs) may be cost-effective replacements for aging or maintenance-intensive eddy-current drives. This tip sheet provides suggested actions and example energy savings calculations. Motor Systems Tip Sheet #12 Is it Cost-Effective to Replace Old Eddy-Current Drives? (November 2012) (484.3 KB) More Documents &

  1. Minimize Adverse Motor and Adjustable Speed Drive Interactions

    Broader source: Energy.gov [DOE]

    Electronic adjustable speed drives (ASDs) are extremely efficient and valuable assets to motor systems. They allow precise process control and provide energy savings within systems that do not need to operate continuously at full output. This tip sheet discusses design considerations to take into account when considering ASDs and offers suggested actions.

  2. SE Drive Technik | Open Energy Information

    Open Energy Info (EERE)

    Drive Technik Jump to: navigation, search Name: SE Drive Technik Place: Bochum, Germany Zip: 44791 Product: Germany-based R&D subsidiary of Indian turbine maker Suzlon. References:...

  3. GenDrive Limited | Open Energy Information

    Open Energy Info (EERE)

    GenDrive Limited Jump to: navigation, search Name: GenDrive Limited Place: Cambridge, United Kingdom Zip: CB23 3GY Sector: Renewable Energy, Solar, Wind energy Product: Developing...

  4. Eco Drive Capital Partners | Open Energy Information

    Open Energy Info (EERE)

    Capital Partners Jump to: navigation, search Name: Eco-Drive Capital Partners Place: New York Product: New York-based Eco-Drive is a European-American investment consortium,...

  5. NexxtDrive | Open Energy Information

    Open Energy Info (EERE)

    NexxtDrive Jump to: navigation, search Name: NexxtDrive Place: London, England, United Kingdom Zip: WC2N 5HR Product: London-based firm developing electro-mechanical technologies...

  6. Indianapolis Offers a Lesson on Driving Demand

    Broader source: Energy.gov [DOE]

    Successful program managers know that understanding the factors that drive homeowners to make upgrades is critical to the widespread adoption of energy efficiency. What better place to learn about driving demand for upgrades than in Indianapolis, America's most famous driving city?

  7. Crops reap benefits of Pantex irrigation system | National Nuclear...

    National Nuclear Security Administration (NNSA)

    fields of wheat and lush tracts of corn stretch across Pantex land soaking up the Texas sun. Invisible to the eye is what else they're soaking up - an estimated 900,000 gallons a...

  8. Toward an Earth System Modeling Approach to Simulate Irrigation...

    Office of Science (SC) Website

    about 87% of global freshwater withdrawals, significantly altering the global water cycle. ... demand for water resources at the regional scale over the conterminous United States. ...

  9. Fluid cooled vehicle drive module

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Radosevich, Lawrence D.; Meyer, Andreas A.; Gollhardt, Neil; Kannenberg, Daniel G.

    2005-11-15

    An electric vehicle drive includes a support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EM/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  10. Small Businesses Helping Drive Economy: Clean Energy, Clean Sites...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Businesses Helping Drive Economy: Clean Energy, Clean Sites Small Businesses Helping Drive Economy: Clean Energy, Clean Sites A memo on small businesses helping drive the economy: ...

  11. DOE Tour of Zero Floorplans: Hickory Drive by Glastonbury Housesmith...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hickory Drive by Glastonbury Housesmith DOE Tour of Zero Floorplans: Hickory Drive by Glastonbury Housesmith DOE Tour of Zero Floorplans: Hickory Drive by Glastonbury Housesmith...

  12. Vehicle Technologies Office: U.S. DRIVE 2015 Technical Accomplishments...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    U.S. DRIVE 2015 Technical Accomplishments Report Vehicle Technologies Office: U.S. DRIVE 2015 Technical Accomplishments Report The U.S. DRIVE 2015 Highlights of Technical ...

  13. Vehicle Technologies Office: US DRIVE Materials Technical Team...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    US DRIVE Materials Technical Team Roadmap Vehicle Technologies Office: US DRIVE Materials Technical Team Roadmap The Materials Technical Team (MTT) of the U.S. DRIVE Partnership ...

  14. US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Sustainability Partnership Plan | Department of Energy Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Partnership Plan US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Partnership Plan This document describes the vision, mission, scope, and governing policies of the U.S. DRIVE Partnership ("Partnership"). Dated July 2016. U S DRIVE Partnership Plan - July 2016.pdf (400.46 KB) More Documents &

  15. Replace V-Belts with Notched or Synchronous Belt Drives | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy V-Belts with Notched or Synchronous Belt Drives Replace V-Belts with Notched or Synchronous Belt Drives Belt drives provide flexibility in the positioning of the motor relative to the load. Pulleys (sheaves) of varying diameters allow the speed of the driven equipment to be increased or decreased relative to the motor speed. A properly designed belt power-transmission system offers high efficiency and low noise, requires no lubrication, and presents low maintenance requirements.

  16. Algal Biofuels: Long-Term Energy Benefits Drive U.S. Research | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy Algal Biofuels: Long-Term Energy Benefits Drive U.S. Research Algal Biofuels: Long-Term Energy Benefits Drive U.S. Research Algal Biofuels: Long-Term Energy Benefits Drive U.S. Research algal_biofuels_factsheet.pdf (96.06 KB) More Documents & Publications Advanced Algal Systems Fact Sheet 2016 National Algal Biofuels Technology Review 2015 Peer Review Presentations-Algal Feedstocks

  17. U.S. DRIVE Partnership Releases Accomplishments Report

    Broader source: Energy.gov [DOE]

    The U.S. DRIVE Partnership has released its 2014 Accomplishments Report, which includes significant technical accomplishments in advanced combustion and emission control, electrical and electronics, electrochemical energy storage, fuel cells, materials, vehicle systems analysis, codes and standards, hydrogen storage, grid interaction, fuel pathway integration, hydrogen delivery, and hydrogen production.

  18. Opportunities for Automated Demand Response in California Agricultural Irrigation

    SciTech Connect (OSTI)

    Olsen, Daniel; Aghajanzadeh, Arian; McKane, Aimee

    2015-08-01

    Pumping water for agricultural irrigation represents a significant share of California’s annual electricity use and peak demand. It also represents a large source of potential flexibility, as farms possess a form of storage in their wetted soil. By carefully modifying their irrigation schedules, growers can participate in demand response without adverse effects on their crops. This report describes the potential for participation in demand response and automated demand response by agricultural irrigators in California, as well as barriers to widespread participation. The report first describes the magnitude, timing, location, purpose, and manner of energy use in California. Typical on-­farm controls are discussed, as well as common impediments to participation in demand response and automated demand response programs. Case studies of demand response programs in California and across the country are reviewed, and their results along with overall California demand estimates are used to estimate statewide demand response potential. Finally, recommendations are made for future research that can enhance the understanding of demand response potential in this industry.

  19. Minimize Adverse Motor and Adjustable Speed Drive Interactions - Motor Tip Sheet #15

    SciTech Connect (OSTI)

    2008-07-01

    Electronic adjustable speed drives (ASDs) are an extremely efficient and valuable asset to motor systems. They allow precise process control and provide energy savings within systems that do not need to continuously operate at full output.

  20. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, Charles E.; Benson, Ralph A.

    1994-01-01

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor.

  1. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, C.E.; Benson, R.A.

    1994-11-29

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor. 3 figures.

  2. Advanced Electric Drive Vehicles … A Comprehensive Education...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program Advanced Electric Drive Vehicles A Comprehensive ...

  3. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    9 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9 PDF icon grandchallengesportfoliopg9.pdf More Documents & Publications ...

  4. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    8 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 PDF icon grandchallengesportfoliopg8.pdf More Documents & Publications ...

  5. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    6 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 6 PDF icon grandchallengesportfoliopg6.pdf More Documents & Publications ...

  6. Electric-Drive Vehicle Basics (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-04-01

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  7. High Efficiency Driving Electronics for General Illumination...

    Office of Scientific and Technical Information (OSTI)

    Driving Electronics for General Illumination LED Luminaires Upadhyay, Anand 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION New generation of standalone LED driver platforms...

  8. Driving Innovation, Speeding Adoption, Scaling Savings

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Driving Innovation, Speeding Adoption, Scaling Savings An Overview of the Building Technologies Office Roland Risser 2016 Building Technologies Office Peer Review April 4, 2016 2 ...

  9. Driving the Future | Argonne National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Driving the Future At Argonne National Laboratory's Center for Transportation Research, our goal is to accelerate the development and deployment of vehicle technologies that help...

  10. Advanced Electric Drive Vehicles ? A Comprehensive Education...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    D.C. PDF icon tiarravt034ferdowsi2010o.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...